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B is twice as efficients as A, who works...

B is twice as efficients as A, who works half as fast as C. If, A, B and C can complete a piece of work in 20 days. In how may day can B and C together complete it?

A

50

B

100

C

25

D

30

Text Solution

Verified by Experts

The correct Answer is:
C
Given , B=2A and `A=(C)/(2)`
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