Arithmetic Quiz - Time and Work - 15 September 2020

The ratio of time taken by A, B and C to complete a work alone are 3 : 4 : 2. B and C together can do the same work in 8 days. In how many days A alone can do the same work?

Alok can do a piece of work in 18 days and Mohan can do the same work in 24 days. Alok started the work and after 10 days Mohan joined with Alok. In how many days the work will be completed?

A is three times efficient as much as B and A takes 16 days less than B to complete the work. In how many days the work will be completed, if A and B start working together?

C does half as much work as A and B together. A does half as much work as B . If B alone can complete the work in 27 days then in how much time they all working together can finish the work ?

A certain work was to be completed in 25 days. 60 men working 8 hours daily were set to work. After 15 days only  of the work was completed. How many additional men must be employed so that the work can be completed on time and this time each men working 10 hours daily ?