Asha can finish a work in 15 days. The same work is finished by Nirmala in 12 days. In how many days both of them will finish the work while working together?

A can do a piece of work in 4 days and B can do it in 12 days. In how many days will they finish the work, both working together ?

A started a work and left after working for 4 days, then B was called and he finished the work in 18 days. If A left the work after working for 6 days then B would have finished the remaining work in 12 days. In how many days can each of them, working alone finish the whole work?

X can finish 25% of a work in a day. Y can do 12.5% of the same work in a day. In how many cays, will both of them finish the work together? A. 2.67 days B. 2.33 days C. 3.33 days D. 3.67 days

A can do (2)/(3) of a certain work in 16 days and B can do (1)/(4) of the same work in 3 days. In how many days can both finish the work, working together?