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A steamer goes downstream from one port to another in 17 h. It covers the same distance upstream in 21 h. If the speed of the stream is 2 km/h, then find the distance between the two ports?

Correct

Answer : 2. 357 km
Solution:
17(S+R) = 21(S-R)
S = 19 R =2
D = 17*21 = 357

Incorrect

Answer : 2. 357 km
Solution:
17(S+R) = 21(S-R)
S = 19 R =2
D = 17*21 = 357

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

Sriram has to cover a distance of 12 km in 45 minutes. If he cover one half of the distance in 2/3rd time. What should be his speed to cover the remaining distance in the remaining time?

Two trains A and B start from station X and Y towards Y and X respectively. After passing each other they take 2 hour 24 minutes and 1 hour 40 minutes to reach Y and X respectively. If train A is moving at 45 km/hr, then the speed of train B is?

Correct

Answer : 2. 54 km/hr
Solution:
After meeting let the distance travelled by train A be p and distance travelled by train B be q
then
before meeting 45*t =p and S*t = q
after meeting 45*12/5 = q and S*5/3= p
solving equations
we get s =54 km/hr

Incorrect

Answer : 2. 54 km/hr
Solution:
After meeting let the distance travelled by train A be p and distance travelled by train B be q
then
before meeting 45*t =p and S*t = q
after meeting 45*12/5 = q and S*5/3= p
solving equations
we get s =54 km/hr

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

A, B and C can do a piece of work in 20, 24 and 30 days, respectively. They undertook to do the piece of work for Rs.10800. They begin the work together but B left 2 days before the completion of work and C left 5 days before the completion of work. The share of A from the assured money is?

Correct

Answer : 3.Rs.5400
Solution:
x/ 20 + x-2/ 24 + x-5/30 =1
x =10
A = 10/20 = 1/2 work is done by A
A gets ½ of 10800 = 5400

Incorrect

Answer : 3.Rs.5400
Solution:
x/ 20 + x-2/ 24 + x-5/30 =1
x =10
A = 10/20 = 1/2 work is done by A
A gets ½ of 10800 = 5400

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

A pipe can fill a cistern in 24 minutes and another pipe can fill it in 30 minutes, but a third pipe can empty it in 12 minutes. The first two pipes are kept open for 10 minutes in the beginning and then third pipe is also opened. In what time is the cistern emptied?

Correct

Answer : 5.90 min
Solution:
10 ( 1/24+ 1/30) + x(1/24+ 1/30- 1/12) = 0
x =90 min

Incorrect

Answer : 5.90 min
Solution:
10 ( 1/24+ 1/30) + x(1/24+ 1/30- 1/12) = 0
x =90 min

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

There are two vessels A and B. Vessel A is containing 80 litres of pure milk and vessel B is containing 44 litre of pure water. From vessel A, 16 litre of milk is taken out and poured into vessel B. Then 12 litres of mixture (milk and water) is taken out and from vessel B poured into vessel A. What is the ratio of the quantity of pure pure milk in vessel A to the quantity of pure water in vessel B?

Correct

Answer : 1.21:11
Solution:
Vessel A Milk= 80
Vessel B water = 44
16 liter milk from A is poured in B
Vessel A Milk = 64
Vessel B Milk = 16 Water = 44
Now 12 liters from vessel B poured in A
Vessel B: Milk = 16- 12*4/15 = 12.8
Water = 44-12*11/15 = 35.2
Vessel A: Milk = 64+12*4/15 = 67.2
ratio = 21:11

Incorrect

Answer : 1.21:11
Solution:
Vessel A Milk= 80
Vessel B water = 44
16 liter milk from A is poured in B
Vessel A Milk = 64
Vessel B Milk = 16 Water = 44
Now 12 liters from vessel B poured in A
Vessel B: Milk = 16- 12*4/15 = 12.8
Water = 44-12*11/15 = 35.2
Vessel A: Milk = 64+12*4/15 = 67.2
ratio = 21:11

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

What is the total amount when compounded annually? Statement I: If sum becomes double in 3 years at CI Statement II: Difference between Interest and sum is Rs.1580 Statement III: If interest for 2 years is Rs.420 at 10% CI

Correct

Answer : 3.Only III
Solution: Only III is enough

Incorrect

Answer : 3.Only III
Solution: Only III is enough

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

What is the length of the train? Statement I: If the speed of the train is 36 km/hr Statement II: If train crosses a platform in 75 sec Statement II: If the length of platform is 200 m more than length of train

Correct

Answer : 4.All I,II and III

Incorrect

Answer : 4.All I,II and III

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