Two persons A and B started a work and after 10 days B left the work. Two days after B left, C joined A, and the total work was completed in ‘ N’ days. Each person completes an equal share of the work. It is known that A and B together can complete the work in ‘ N’ days. ‘C’ alone can complete the work in.
a) 30 days
(b) 24 days
(c) 25 days
(d) 22 days
Sol:
