Question

A alone can do a piece of work in 30 days, while B alone can do it in 15 days, and C alone can do it in 10 days. If in every second day B, and in every third day C helps A in doing the work, how many days will be required to complete the whole work?

Answer 1

Answer: 4 days

Step-by-step explanation:

Answer 2

Answer:

Efficiency of A, B and C= 1: 2: 3

total work= 30 unit

First 6 days work= 1* 6+ 2* 3+ 3* 2= 18

Remaining Work= 12 unit

next 3 days work done by A+ B+ C= 1* 3+ 2* 1+ 3* 1= 8 unit.

Remaining= 4 unit

next day work= 1* 2+ 2* 1= 4 unit

Remaining= 0

Total time= 6+ 3+ 1= 10days

Step-by-step explanation: