Question

(ii) A can finish a piece of work in 15 days and B can do it in 10 days. How much time will it take if they work together to complete the work?​

Answer 1

Answer:

are you an ICSE board student ?

Answer 2

Answer:

6 days

Step-by-step explanation:

Fraction of work done by A in 1 day = 1/15

Fraction of work done by B in 1 day = 1/10

Fraction of work done by A and B together in 1 day =

$\frac{1}{15} + \frac{1}{10} = \frac{2}{30} + \frac{3}{30} = \frac{5}{30} = \frac{1}{6}$

So, A and B can complete 1/6 of the work in 1 day. Hence, A and B will take 6 days to complete the work if they work together.

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