$\dfrac{4}{5}$ + $\dfrac{7}{2} \div$ ($\dfrac{5}{2}$ - $\dfrac{3}{4}$) $\times$ $\dfrac{7}{8}$ is equal to

The sales tax on a refrigerator at the rate of 9% is Rs.1,170, then the actual sale price is

Ramu is now half as old as his father. Fifteen years ago the fathers age was three times as old as Ramu. Then their presentages are

Easwari deposited Rs.350 per month for 6 years in a recurring deposit account in a post office. If she received Rs.32,865, then the rate of interest is

The radius and height of a cylinder are in the ration 5: 7. If its volume is 440
cu. cm then the radius of the cylinder is

Find the area of the shaded portions in the figure, where ABCD is a square of side 21 cm.

The three angle bisectors of a triangle are concurrent and the point of concurrence is called the

If two circles of radii r1 and r2 touch internally, the distance between their centres is equal to

A, B and C can do a work in 12, 15 and 20 days respectively. They all work for one day. Then B leaves the group. In how many days will A and C complete
the rest of the work?

Area of a trapezium is 33.32 cm2. Its one side is 8 cm and height 5.6 cm, then the another side is