Quantitative Aptitude - Arithmetic Ability Questions

If the time increases by 5 years, then simple interest increases by Rs 3000 on a sum of Rs 5000. What is the rate (in percentage) of interest per annum?

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?

The line passing through the point (5,a) and point (4,3) is perpendicular to the line x - 6y = 8. What is the value of 'a'?

In the following question, select the odd number from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

If  2x+14x = 1, then the value of  x2+164x2is

What is the value of sin ­-300°?

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?