3 years ago in Time and Work

# A and B completed a work together in 5 days. had A worked at twice the speed and B at half the speed, it would have taken them four days to complete the job. How much time would it take for A alone to do the work?

[A] 10 days
[B] 20 days
[C] 25 days
[D] 15 days
[E] 24 days

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Singavarapu Vasu - 2 years ago

Singavarapu Vasu is saying 10 days is correct answer

## Related Questions

### The water from one outlet, flowing at a constant rate, can fill the swimming pool in 9 hours. The water from second outlet, flowing at a constant rate can fill up the same pool in approximately in 5 hours. If both the outlets are used at the same time, approximately what is the number of hours required to fill the pool?

• [A] 14/45 hrs
• [B] 19/45
• [C] 45/14
• [D] 45/19
• [E] 45/23

### Three pipes A,B and C attached to a cistern. A can fill it in 10 min, B in 15 min, C is a waste pipe for emptying it. After opening both the pipes A and B, a man leaves the cistern and returns when the cistern should have been just full. Finding, however, that the waste pipe had left open, he closes it and the cistern now gets filled in 2 min. In how much time the pipe C, if opened alone, empty the full cistern?

• [A] 12 min
• [B] 16 min
• [C] 18 min
• [D] 15 min
• [E] None of these

• [A] 15
• [B] 16
• [C] 18
• [D] 25

• [A] 15
• [B] 16
• [C] 18
• [D] 25
• [E] 22

• [A] 15 days
• [B] 16 days
• [C] 18 days
• [D] 20 days