Question : A company employed 200 workers to complete a certain task in 150 days. If only one-fourth of the work has been done in 50 days. Then, in order to complete the whole work on time, the number of additional workers to be employed was:

Question : A contractor decided to complete a work in 80 days and employed 60 men at the beginning and 20 men additionally after 20 days and got the work completed as per schedule. If he had not employed the additional men, how many extra days would he have needed to complete the work

Question : 14 persons can build a house in 60 days. How long will it take 30 people to build your house, provided that they all work at the same rate?

Question : A, B and C can work separately in 18, 36 and 54 days. They started the work together, but B and C left 5 days and 10 days, respectively, before the completion of the work. In how many days was the work finished?

Question : The value of $\frac{27 \times(0.25)^3+125(0.05)^3}{(0.75)^2-0.25 \times 0.5}$ is :