CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
61
@sscjindabad said:
What angle did u get n how???
in triangle ABD we get cosBAD = 15/25
then in triangle ADE sinEAD = AD/15 or 20/25 = AD/15
therefore AD = 12
also AE = 9
and from fig u can see that AE = FB
so we an find CD = AB - AE - FB = 7
so area = 1/2*12*(25+7) = 192
62
@sampras : Thnx a ton

63
@rahulshaitan said:

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50 (c) 120 (d) Data inadequate (e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

Answers in bold...Plz explain the 3 rd one

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50
(c) 120
(d) Data inadequate
(e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15 cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

64
@rahulshaitan said:

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50 (c) 120 (d) Data inadequate (e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

Answers in bold...Plz explain the 3 rd one

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50
(c) 120
(d) Data inadequate
(e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15 cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

65
@sandy73 said: Direct to Indirect speech I said to him, €˜Were you present at the meeting yesterday? €™
I asked him if he had been present at the meeting the day before.
66
@sscjindabad said:
I asked him if he had been present at the meeting the day before.
Cud use the previous day also...
67
@Dusky said:
I asked him if he was present at the meeting the day before..
This is wrong it shud be had been in place of was
68
@sscjindabad : for 3 we have 2 eqn:

2(b/2+l)=38
2(b + l/2)=34

solve n get ans,
post ur logic fr 4 n 5 plz
69
@sscjindabad said:
This is wrong it shud be had been in place of was
Oops.. Thanx for the correction .. :)
70
@Brooklyn said:
doubles in 3 hence will become 4 times in 6 yrz. Now 4*2=8 n 4*1/2= 2
so we need 6 hence in 1.5 yr more it will be 6 times,
hence ans= 7.5 yr ???
will not be exact 7.5 yr............but around 7.7 or 7.8 something...
71
@JS-M : ohh !! how to do ur appraoch plz :)
72
@rahulshaitan said:

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50 (c) 120 (d) Data inadequate (e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

1.(e) none of these
2.(b) 153600
3.(a) 140 cm2
4.(d) 64 cm
5.What are the dimensions of square tiles to be used ??
73
@Brooklyn said:
@sscjindabad : for 3 we have 2 eqn:
2(b/2+l)=38
2(b + l/2)=34
solve n get ans,
post ur logic fr 4 n 5 plz
Bhai in 4.use rtl^2+b^2=perimeter
n in 5 use 1517*902/41*41 as 41 is the HCF...
74
@sscjindabad said:
Answers in bold...Plz explain the 3 rd one

1. The length of a rectangular plot is 20m more than its breadth. If the cost of fencing the plot @ Rs 26.50 per meter is Rs 5300. What is the length of the plot in meters?

(a) 40

(b) 50 (c) 120 (d) Data inadequate (e) none of these

2. The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/h completes one round in 8 min; then the area of the park (in sq.m) is:

(a) 15360

(b) 153600

(c) 30720

(d) 307200

3. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for each part folded along one set of sides and the same is 38 cm when folded along the other set of sides. What is the area of the paper?

(a) 140 cm2

(b) 240 cm2

(c) 560 cm2

(d) None of these

4. The length of a rectangular is three times of its width. If the length of the diagonal is 8 ˆš10 cm, then the perimeter of the rectangle is:

(a) 15referrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> ath o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"> ath>cm

(b) 16 cm

(c) 24cm

(d) 64 cm

5. What is the least number of square tiles required to pave the floor of a room 15m 17cm long and 9 m 2 cm broad?

(a) 814

(b) 820

(c) 840

(d) 848

(e) None of these

plz expain qs 5
75
@Dusky
@Dusky said:
Yes yar.. the same formula.. nothing new.. after solving u'l get 2 = (6/5)^n need to find the n but no direct method u need to multily 6/5 4 times with itself to get the ans more than 2 as the question demands. So the ans = 4yrs
i think ans is 7+1/2 years
76
@sscjindabad : yar 5 mei yahi kiya that!! made dumb multipication error n same for 4
77
@Brooklyn said:
@sscjindabad : yar 5 mei yahi kiya that!! made dumb multipication error n same for 4
Make sure u do such mistakes in the forum,,,,Perhaps this the purpose of the forum...
78
@007pagal

@ss.r@sscjindabad

@rahulshaitan

i think for the 5th question in question didn`t mention the squares must be same size so ans is 11->none of these
79
@nellorereddy : only same sized sq tile will ever give least no :)
80
@nellorereddy said:
Bro nellore I accept ur observation but since answer is there in the option so i did it that way..U cud have it ur way also..I assume when puys type there cud be typo errors also..
@007pagal
@rahulshaitan
i think for the 5th question in question didn`t mention the squares must be same size so ans is 11->none of these