Quantitative Aptitude - Arithmetic Ability Questions

Present ages of Rahul and his brother are in the ratio of 5 : 3. After 4 years ratio of ages of Rahul’s brother and his sister will be 5 : 6. If the present age of his sister is 26 years, then what will be the age (in years) of Rahul 3 years from now?

A train travelling at 76 kmph crosses a 450 m long platform in 27 seconds. What is the length of the train?

If sec -5π/4 = x, then the value of x is

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

Select the odd letters from the given alternatives.

If a+1b = 1 and b+1c = 1 then c+1a = ?

If 3x ­- 2(4 ­- 3x) < 2x ­- 5 < 3x + 3; then the value of x is