Quantitative Aptitude - Arithmetic Ability Questions

If one more cobbler is hired the output of a shoe making unit will increase from 50 pairs of shoes to 55 pairs per day, but then the shoe making unit will have to reduce the price of a pair of shoes from Rs 3200 to Rs 3000 per pair to sell the additional output, the marginal revenue product of the last cobbler is

The value of cos220°+cos270° is

An object travels 23 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/10 th of a second?

Profit of Rs 1,03,500 has to be divided between three partners A, B and C in the ratio 11:7:5. How much amount (in Rs) does B get?

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?

The average of 19 consecutive even integers is 50. The highest of these integers is

The circumference of a circle is 88 cm, find its area?