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Efficiency of A is 40% more than that of...

Efficiency of A is 40% more than that of B and ratio of efficiency of C to A is 6:7. Time taken by A and C together to complete the work is 18 days. Find the number of days taken by all of them working together to complete the same work?

A

16 days

B

12 days

C

15 days

D

13 days

Text Solution

Verified by Experts

The correct Answer is:
D
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