Quantitative Aptitude - Arithmetic Ability Questions

Two trains are moving in opposite directions with the same speed. If the length of each train is 144 metres and they cross each other in 9 seconds, then what is the speed (in km/hr) of each train?

Δ DEF is right angled at E. If m∠F = 45°, then what is the value of 2 Sin F x Cot F?

15 small rods, each of length 23 2/7 m are joined to make a big rod. What then is the length of the big rod?

The diagonals of 2 squares M and N are in the ratio 2:1. The ratio of their areas is

If X + 2Y = 27 and X - 2Y = -1, find the value of Y.

The volume of a hemisphere is 5749.33 cm³. Find its diameter (in cm).

The product of two numbers is 20. One of them is 1.25. What is the other number?

Average marks obtained by 19 boys of a college is 56. If the highest marks and lowest marks obtained are removed, then the average reduces by 2. What is the average of the highest and lowest marks obtained?