Quantitative Aptitude - Arithmetic Ability Questions

If on an item there is 12% discount on the marked price of Rs 10,000 but the item is sold at Rs 8,360 only then what additional discount (in %) did the customer get?

Find the least number which must be subtracted from 18265 to make it a perfect square

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

A 150 m long train, travelling at 54 km/h, crosses a platform in 42 seconds. What is the length of the platform?

If tan(A/2) = x, then the value of x is

The value of cos220° + cos270°is

If one angle of a triangle is equal to half the sum of the other two equal angles, then the triangle is

50 litre mixture of water and alcohol contains 10% alcohol. How much more alcohol must be added to make the strength of alcohol 40% in the new mixture?