Vivek is 30% more efficient than Neha. How much time will they, working together, take to complete a job which Vivek alone could have done in 23 days?

Twenty women can do work in sixteen days. Sixteen men can complete the same work in fifteen days. The ratio between the capacity of a man and a woman is

P and Q can do a piece of work in 12 days, Q and R can do a piece of work in 15 days and R and P can do a piece of work in 20 days. Q alone can do the whole work in

A can do a work in 6 days and B can do the same work in 12 days. If A, B and C together can do the same work in 4 days, then in how much days C can do it alone?

A alone can complete a piece of work in 6 days and B alone can complete the same work in 8 days, then in how many days can A and B together complete the same work?

Anil, Deepak, and Dinesh together can complete a work in 35 days. Anil and Dinesh together can complete the same work in 60 days. In how many days Deepak alone can complete the same work?

A alone can complete a work in 6 days and B alone can complete the same work in 8 days. In how many both A and B together can complete the same work ?

120 men consume 720 kg of rice in 30 days. In how many days can 90 men consume 270 kg?