Quantitative Aptitude - Arithmetic Ability Questions

Find the number that is as much greater than 49 as is less than 95.

In 250 litres mixture of soda and water the ratio of amount of soda to that of water is 7 : 18. In order to make this ratio 2 : 3, how many more litres of soda should be added?

65.The angles of elevation of an aeroplane flying vertically above the ground, as observed from the two consecutive stones, 1 km apart; are 45o and 60o. The height of the aeroplane from the ground is

If sec (3x – 20°) = cosec (3y + 20°), then what is the value of tan (x + y)?

If 35% of (x + y) = 40% of (x – y), then x is what percentage of y?

The simplest form of 3774/2958 is

If x + y = 10 and xy = 4, then what is the value of x4 + y4?

If a and b are the roots of the equation Px2 – Qx + R = 0, then what is the value of (1/a2) + (1/b2) + (a/b) + (b/a)?