Question

Nitish can do a certain work in 25 days and Jatin can do it in 20 days. Nitish started
the work and after 5 days Jatin joined him. Find the number of days required by both
of them to finish the remaining work.​

Answer 1

20 and 25 LCM = 100

4&5 their efficiency

4*5= 20

100-20=80

80/5=16