Question

A and B can do a certain job in 5h and A alone can do it in 8h. how long will B take to do the job alone​

Answer 1

Answer:

40/3 hrs .

Step-by-step explanation:

Work done by B in 1 hour =1/5-1/8

=3/40

Total work done =1÷3/40

=40/3 hours.

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