A is 30% more efficient than B. If A can finish a job in 23 days, how many days will A and B take together to finish it?

Options
- 11 days
- 13 days
- 15 days
- None of these

CORRECT ANSWER : 13 days

Discussion Board
solution

The given answer is incorrect

a is 30% more efficient than b.

a can finish a job in 23 days so

b can finish the job in 23*100/30=230/3 days

both a and b together to finish a job in 1 day= (1/23)+(3/230)
= (10+3)/230
= 13/230
both a and b together to finish a job in= 230/13 days



G.venkata suresh reddy 08-11-2016 02:31 AM

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