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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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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