The third proportional of two numbers 4 and 28 is _______.

A bank offers 20% compound interest per half year. A customer deposits Rs 6000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is

If the radius of a circle is increased by 31% its area increases by ______.

A missile travels at 1116 km/h. How many metres does it travel in one second?

If x + 3 ≤ 4x + 4 and 5(4 -­ x) ­- 4 ≥ 5x - ­2; then

40.36 ­- (9.347 -­ x ) -­ 29.02 = 3.68. Find x.

On dividing 221a2b2 by 13b2, we get _____.

The mean of marks secured by 60 students in division A of class X is 66, 45 students of division B is 62 and that of 75 students of division C is 60. Find the mean of marks of the students of three divisions of Class X.