Quantitative Aptitude - Arithmetic Ability Questions

In a class of 50 students there are 27 boys. The average weight of these boys is 72 Kg and average weight of the full class is 55.44 kgs. What is the average weight (in kgs) of the girls of the class?

In a class of 55 students there are 34 girls. The average weight of these girls is 51 Kg and average weight of the full class is 55.2 kgs. What is the average weight of the boys of the class?

The cube of 105 is

An amount fetched a total simple interest of Rs. 3200 at the rate of 6.25 %/yr in 4 years. What is the amount (in Rs)?

If  tan2A / (secA -­ 1)2 = x, then the value of x is

If u : v = v : w, then what is the value of u4 : v4?

A piece of wire 132 cm long is bent successively in the shape of an equilateral triangle, a square and a circle. Then area will be longest in shape of

An angle is smaller than its supplementary angle by 70°. What is the measure of the angle?