6 men can complete the electric fitting in a building in 7 days. How many days will it take if 21 men do the job?

Aasheesh can paint his doll in 20 minutes and his sister Chinki can do so in 25 minutes. They paint the doll together for five minutes. At this juncture, they have a quarrel and Chinki withdraws from painting. In how many minutes will Aasheesh finish the painting of the remaining doll?

A and B can do a piece of work in 6 days and 4 days respectively. A started the work, worked at it for 2 days and then was joined by B. Find the total time taken to complete the work.

8 men can do a piece of work in 9 days. In how many days will 6 men do it?

Reema weaves 35 baskets in 25 days. In how many days will she weave 55 baskets?