Question

2. A and B working together can do a piece of work in 10 days. B alone can do the same work in 15 days. How long A will take to ​

Answer 1

Answer:

Please refer the image attached

Answer 2

$\huge{ \underline{ \underline{ \mathbb{ \red{SoLuTion}}}}}$

A and B together can do a work in 10 days and B can do the same work in 15 days

A and B’ s one day’s work = 1/10

And B’ s one day’s work = 1/15

$\bold{∴ A’s \: one \: day’s \: work = 1/10 – 1/15}$

$\: = (3 – 2)/30$

$\: = 1/30$

Hence A can do the same work in = 30 days