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13-09-2020
Mathematics

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5. A can do a piece of work in 8 days which B alone can
do in 10 days. In how many days both working
together can do it?

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lifelongknowledge62 lifelongknowledge62

13-09-2020

Answer:

In 1 day A can do 1/8 work

In 1 day A can do 1/10 work

in 1 day A+B can do (1/8 +1/10) 40rk

in 1 day A=B can do 9/40 work

so In 1/ (9/40) days A+B can do work together = 40/9 days

Step-by-step explanation:

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