Quantitative Aptitude - Arithmetic Ability Questions

A bag has Rs 20 in the form of 1­-rupee, 50­-paise and 10­-paise coins in the ratio of 2:3:5. Find the number of 50­-paise coins.

An electric pump can fill a tank in 2 hours. Because of a leak in the tank, it was taking 21⁄2 hours to fill the tank. The leak can drain all the water off the tank in how many hours?

Two runners A and B start running at 12 km/hr and 16 km/hr towards each other. They meet after 1 hour and 30 minutes. How far (in km) were they from each other when they started?

Two cyclists A and B start cycling at 21 km/hr and 24 km/hr towards each other. They meet after 1 hour and 12 minutes. How far (in km) were they from each other when they started?

(242699 + 167109) ÷ (9946 –9446) = ?

A sum of Rs 2000 becomes Rs 3645 in 2 years at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

What is the value of tan­ -240°?