X can do a piece of work in 6 days while Y can do the same work in 5 days. If the total amount to be given for this work is Rs. 660, what will be the share of Y, if both do the work together?

30 persons can do a piece of work in 24 days. How many more people are required to complete the work in 20 days?

A can built a wall in 8 days while B can destroy the same wall in 3 days. A start the work and worked for 6 days, during the last 2 days of which B also joins him. In how many days A can finish the remaining work alone?

B is 20% more efficient than A. A started the work and work for x days and then A is replaced by B. B completed the remaining work in x+8 days. Ratio of the work done by A and B is 2:3. In how many days A and B working together can complete the whole work?

In an office there are 50 men and 30 women and their average salary is Rs.22500 and every woman gets Rs. 400 less than a man. Find the salary of a man.

‘A’ alone can complete a work in 6 days and “B” can complete this work alone in 8 days. They can complete this work in 3 days with the help of C. If they are paid Rs. 6400 for this work, then find the share of C.

40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is Rs. 39000. The annual income of each executive is Rs. 42000. What is the average annual income of all the employees in the factory together?

A work is done by three person A, B and C. A alone takes 10 hours to complete the work but B and C working together takes 4 hours, for the completion of the same work. If all of them worked together and completed 14 times of the work, then how many hours have they worked?