Question

A can do a certain job in 25 days which Balone can do in 20 days. Astarted the work and
joined by B after 10 days. In how many days was the whole work completed?​

Answer 1

Answer:

16*(2/3) days

Explanation:

Work done by A in l0 days = (1/25) *10 = 2/5

Remaining work = 1 - (2/5) = 3/5

(A+B)s 1 days work = (1/25) + (1/20) = 9/100

9/100 work is done by them in 1 day.

hence 3/5 work will be done by them in (3/5)*(100/9)

= 20/3days.

Total time taken = (10 + 20/3) = 16*(2/3) days