Question

9. A can do a piece of work in 10 days and B in 20 days. They begin together but A leaves 2 days before th
completion of the work. In how many days will the whole work be completed?
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Answer 1

Answer:

Let the work will be done in x days.

1 day work of A = 1/ 10

1 day work of B = 1/20

x - 2 / 10 + x / 20 = 1

2x - 4 + x / 20 = 1

3x - 4 = 20

3x = 24

x = 8 days

Hence the whole work will be done in 8 days.

Also learn more

A can do a piece of work in 20 days and b in 15 days. with help of c, they finish the work in 5 days. in how many days c alone can do the same work?

Step-by-step explanation:

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Answer 2

total time taken to complete the work will be 8 days.