Question

A can do a piece of work in 10 days and b in 20 days they start work together after 5days a leave off

Answer 1

Answer:

Step-by-step explanation:

By lcm method

let the total work is 20 unit

Work done by a in one day is 2 unit

and work done by b in one day is one unit

Then a+b = 2+1 = 3unit for five day

15 unit work is done by a and b

Remaining 5 unit work done by b

Time taken by b = 5/1 = 5 days