Question

A can do 1/3 of the work in 5 days and b can do it 2/5 of the work in 10 days in how many days both a and b together can do the work ?​

Answer 1

the whole work is 1/3 + 2/5

11/15

both together

1/5 + 1/10

3/10 so it will be

10/3

3.3 days approx

Answer 2

Answer:

Step-by-step explanation:

A can do 1/3 work in 5 days

So he can do complete work in 15 days.

B can do 2/5 work in 10 days.

So he can complete work in 10×5/2

= 25 days

Total time = 1/15 + 1/25

= 8/75

Now reciprocate

= 75/8

= 9.375 days

We usually reciprocal time for calculating work efficiency