Question

A and B can do a piece of work in 10 and 15 days respectively. In how many days will they finish the work if they work together ?​

Answer 1

Answer:

6 days

Step-by-step explanation:

A and B can do a piece of work in 10 and 15 days

i.e A can do (1/10) of the work in one day and B can do (1/15) of the work in 1 one day.

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

A and B can complete a work in 6 days if work together

Answer 2

Step-by-step explanation:

no of days A can do work = 10 days

no of days B can do work = 15 days

total of days to finish the if they work together

= 1. 1. 3 + 2. 5. 1

--- + --- = -------- =---- =---

10. 15. 30. 30. 6

A and B work for 6 days.

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