## A did a job in 6 hours , B did the work in 9 hours , how long will it take for them both to complete the work together

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## Answers ( )

Answer:## 3.6 hrs

Step-by-step explanation:Time taken by A = 6 hrs

therefore time to do 1 part = ⅙hrs

Time taken by B = 9 hrs

therefore time taken to do 1 part = ¹/9 hrs

Time taken to do work together = ⅙ + ¹/9

= 5/18

Therefore time to do entire work is reciprocal of 5/18 = 18/5

= 3⅗ hrs = 3.6 hrs.

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