10 men can finish painting a wall in 8 days. How many more men will be needed if the painting work is to be finished in 4 days?

A sum of Rs.1600 gives a simple interest of Rs.252 in 2 years and 3 months. The rate of interest per annum is 

The ratio of the weights of Monu and Sonu is 4 : 5 If the weight of Monu increases by 12 percent and the weight of Sonu increases by 16.5 percent, the total weight of both increases by 73.76 kg, then find the weight of both of them By what percent does it increase?

The simple interest on a certain sum of the money at 4 % per annum for 4 years is Rs.80 more than the interest on the same sum for 3 years at 5 % per annum. Find the sum.

What is the sum of first 14 natural numbers?

If x:y=3:2 then the ratio $$ {2\ x^{2}+3\ y^{2}}:{3\ x^{2}}-{2\ {y^{2}}}$$ is equal to

The average weight of 5 persons sitting in a boat is 38 kg. The average weight of the boat and the persons sitting in the boat is 52 kg. What is the weight of the boat?

The Banker's discount on a bill due 6 months hence at 16% per annum is ₹ 216. The true discount is: