Question

3. A can do a piece of work in 10 days
and B can do the same piece of work
in 20 days. They start the work
together, but after 5 days A leaves. B
will do the remaining piece of work in
(a) 5 days
(b) 10 days
(c) 6 days
d) 8 days​

Answer 1

Answer:

5 days

Step-by-step explanation:

5/10 + 5/20 = 15/20 = 3/4 work completed in 5 days.

When A leaves,1/4 work have to be completed by B,

20/4 = 5 days