Question

- a b and c can complete a work in 10 12 and 15 days respectively. all three of them starts together but after 2 days a leaves the job and b left the job 3 days before the work was completed. c completed the remaining work alone. in how many days was the total work completed?

Answer 1

person-3 -1
days. -37-x

ATQ
inverse variation
=37*3=x
x=111