A boat covers 40 km upstream and 90 km downstream is 5 hr. It can also cover 60 km upstream and 60 km downstream in 5 hr. The speed of the water current is

1.  4 km/hr

2.  5 km/hr

3.  20 km/hr

4.  25 km/hr

5.  6 km/hr

View Answer  
5
Correct Answer :

5 km/hr


Explanation :
No Explanation available for this question

A young man can do a job in 10 days, his father takes 15 days while his grandfather finishes it in 20 days. They worked together for 2 days. The young man left the job. His father left the job a day earlier than the completion of the work. The job was completed in

1.  7(3/7) days

2.  6(3/7) days

3.  5(3/7) days

4.  7(2/7) days

5.  None of these

View Answer  
5
Correct Answer :

7(3/7) days


Explanation :
No Explanation available for this question

P, Q and R can do a job in 15 days. After working with Q and R for 5 days, P leaves. Then Q and R finish it in 20 days more. In how many days can P do the job alone

1.  25 days

2.  27 days

3.  30 days

4.  28 days

5.  32 days

View Answer  
5
Correct Answer :

30 days


Explanation :
No Explanation available for this question

Rahul, Ramesh and Krishna can finish a project in 22, 33 and 44 days respectively. How soon can they finish the project, if they work jointly

1.  10(2/13) days

2.  12 days

3.  15 days

4.  17.5 days

5.  14.5 days

View Answer  
5
Correct Answer :

10(2/13) days


Explanation :
No Explanation available for this question

Ten men can complete a work in 18 days. After 6 days, 5 more joined. In how many days will the remaining work be completed (All the men are equally efficient.)

1.  6 days

2.  12 days

3.  8 days

4.  10 days

5.  9 days

View Answer  
5
Correct Answer :

8 days


Explanation :
No Explanation available for this question

If the output of 3 men is equivalent to that of 4 women who can complete a job in 12 days working together, how much time would 5 women and 3 men together take to complete the same job

1.  27 days

2.  24 days

3.  5(1/3)

4.  7 days

5.  None of these

View Answer  
5
Correct Answer :

5(1/3)


Explanation :
No Explanation available for this question

Three men earn as much as 4 women; 4 women earn as much as 6 boys; and 8 boys earn as much as 10 girls. If a girl earns Rs. 50 a day, then the earning of a man would be

1.  Rs. 115

2.  Rs. 135

3.  Rs. 125

4.  150

5.  Rs. 120

View Answer  
5
Correct Answer :

Rs. 125


Explanation :
No Explanation available for this question

A group of workers decided to finish a work in 10 days but 5 of them could not join the team. If the rest of the crew completed the job in 12 days, the number of embers present originally in the team was

1.  45

2.  30

3.  50

4.  35

5.  32

View Answer  
5
Correct Answer :

30


Explanation :
No Explanation available for this question

The work done by a man, a woman, and a child are in the ratio 3 : 2 : 1. If daily wages of 20 men, 30 women and 36 children amount to Rs. 78, what will be the wages of 15 men, 21 women and 30 children for 18 weeks

1.  Rs. 7,371

2.  Rs. 8,645

3.  Rs. 9,000

4.  Rs. 7173

5.  None of these

View Answer  
5
Correct Answer :

Rs. 7,371


Explanation :
No Explanation available for this question

P, Q and R working together complete a job in 18 days. P and Q together work twice as much as R; P and R together work thrice as much as Q. P alone can finish the work in

1.  18 days

2.  43.2 days

3.  54 days

4.  72 days

5.  42 days

View Answer  
5
Correct Answer :

43.2 days


Explanation :
No Explanation available for this question
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