Question

9. A can do a piece of work in 10 days and B can do it
in 15 days. They started working together from the
first. In how many days they will finish the work ?​

Answer 1

I think the answer is 6 days

Answer 2

Answer:

So together they can complete work in 6 days.

Step-by-step explanation:

B finishes the work in 15 days. Therefore B finishes 1/15 th of the work in one day. Hence when they work together, they complete (1/10+1/15)=1/6th part of the work in one day. Therefore they require 1/(1/6)=6 days in total to complete the work when they work together.

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