A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ——- days?

One Answer on this Question

1. A & B one day work= 1/18 + 1/30= 8/90

   As we know that number of work is 1

   1÷8/90= 1*90/8= 90/8.

   Since they say “ twice the amount of work

   Then ,2*90/8= 22.5 days

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