Surekha borrowed a sum of money and returned it in two equal annual instalments of ₹5,547 each. If the rate of interest was p.a. compounded yearly, then the total interest paid by her was:

The diameter of a roller is 84 cm and its length is 120 cm. It makes 500 complete revolutions to move once over to level a playground. Find the area of the playground.

If xy(x+y)=1, then is equal to-

If then the value  of will be:

The following table shows the number of units of product produced and sold by a company over the course of six years.

Find the ratio between the total number of units sold in 2013 and 2015 and the number of units produced in 2015 and 2016?

Sin (45 + θ) – Cos (45 – θ) is:

Triangle PQR is such that PQ=9 cm, QR=6 cm, PR=7.5 cm and triangle PQR is similar to triangle XYZ. If XY=18 cm, find the value of YZ.

The radii of three concentric circles are in the ratio of 4 : 5 : 7. What is the ratio of the area between the two inner circles to that between the two outer circles?