Quantitative Aptitude - Arithmetic Ability Questions

If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is

If  P2+1P2 = 47, then the value of P + 1P is

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

Sowing, Irrigation, Hoeing, ?

A group of boys has an average weight of 36 kg. One boy weighing 42 kg leaves the group and another boy weighing 30 kg joins the group. If the average now becomes 35.7 kg, then how many boys are there in the group?

The height of a cone is 45 cm. It is cut at a height of 15 cm from its base by a plane parallel to its base. If the volume of the smaller cone is 18480 cm3, then what is the volume (in cm3) of the original cone?

In the given figure, ABC is a right angled triangle. ABC = 90 deg and ACB = 60 deg. If the radius of the smaller circle is 2 cm, then what is the radius (in cm) of the larger circle?

If x = 2+32-3, then what is the value of x2+x-9 ?

What is the compound interest earned on Rs 80,000 at 40% per annum in 1 year compounded quarterly?