A can do 50% more work than B in same time. B alone can do a piece of work in 30 hours. B starts working and had already worked for 12 hours when A joins him. How many hours should B and A work together to complete the remaining work?

A can do 50% more work than B in same time. B alone can do a piece of

1.	A can do 50% more work than B in same time. B alone can do a piece of work in 30 hours. B starts working and had already worked for 12 hours when A joins him. How many hours should B and A work together to complete the remaining work?
A.	16 hours
B.	12 hours
C.	4.8 hours
D.	7.2 hours
Answer» E.

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A can do 50% more work than B in same time. B alone can do a piece of work in 30 hours. B starts working and had already worked for 12 hours when A joins him. How many hours should B and A work together to complete the remaining work?

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