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B would have taken 10 hours more than wh...

B would have taken 10 hours more than what A would have taken to complete a task if each of them worked alone. Working together they can complete the task in 12 hours. How many hours would B take to do 50% of the task?

A

30

B

15

C

20

D

10

Text Solution

Verified by Experts

The correct Answer is:
B
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