7
Q:

A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ?

A) [7 + (215/345)] days B) [6 + (11/215)] days
C) [6 + (261/315)] days D) [5 + (112/351)] days

Answer:   C) [6 + (261/315)] days



Explanation:

After day 1, A finishes 1/9 of the work.

After day 2, B finishes 1/7 more of the total work. (1/9) + (1/7) is finished.

After day 3, C finishes 1/5 more of total work. Total finished is 143/315.

So, after day 6, total work finished is 286/315.

 

Now remaining work =  29 /315

 

On day 7, A will work again 

 

Work will be completed on day 7 when A is working. He must finish 29/315 of total remaining work.

 

Since he takes 9 days to finish the total task, he will need 261/315 of the day. 

 

Total days required is 6 + (261/315) days.

Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹35000. The share of A (in ₹) in the contracted money will be:

 

A) 7000 B) 21000
C) 14000 D) 15000
 
Answer & Explanation Answer: C) 14000

Explanation:
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2 152
Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹35000. The share of B (in ₹) in the contracted money will be:

 

A) ₹15000 B) ₹14000
C) ₹21000 D) ₹7000
 
Answer & Explanation Answer: C) ₹21000

Explanation:
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0 185
Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹75000. The share of B (in ₹) in the contracted money will be:

 

A) 45,000 B) 30,000
C) 35,000 D) 40,000
 
Answer & Explanation Answer: A) 45,000

Explanation:
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1 312
Q:

If 16 men working 12 hours a day can complete a work in 27 days, then working for how many hours a day can 18 men complete the work in 24 days ?

 

A) 9 B) 18
C) 16 D) 12
 
Answer & Explanation Answer: D) 12

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1 705
Q:

If 40 men working 12 hours a day can complete a work in 8 days, then how many men working 4 hours a day can complete the same work in 16 days?

 

A) 50 B) 60
C) 54 D) 45
 
Answer & Explanation Answer: B) 60

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2 378
Q:

A can complete a piece of work in 20 days and B can complete 20% of the work in 6 days. If they work together in how many dayscan they finish 50% of the work, if they work together

 

A) 12 B) 6
C) 8 D) 9
 
Answer & Explanation Answer: B) 6

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3 568
Q:

Shyam can complete a task in 12 days by working 10 hours a day. How many hours a day should he work to complete the task in 8 days?

 

A) 12 B) 15
C) 16 D) 14
 
Answer & Explanation Answer: B) 15

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1 724
Q:

5 men and 8 women can complete a task in 34 days, whereas 4 men and 18 women can complete the same task in 28 days. In how many days can the same task be completed by 3 men and 5 women?

 

A) 56 B) 72
C) 64 D) 36
 
Answer & Explanation Answer: A) 56

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5 835