If the annual rate of simple interest decreases from 5.5% to 4.5%, then the total interest is decreased by ₹ 250. Find the capital.

Find the rate of simple interest per annum when the interest of some money in 5 years will be part of its principal.

What is the rate of simple interest per annum, when the interest of some money in 10 years will be part of its amount?

Simple interest of ₹ Y for Z month at the rate of X% per annum is (a) ₹ XYZ/1200 (b) ₹ XYZ/100 (c) ₹ 200 (d) ₹ XYZ/120

In how many years a sum of money at 6 % simple interest per annum would be 4 double?

If the amount of ₹ 180 after one year will be ₹ 198, then the rate of simple interest is _____

At the same rate of simple interest in percent per annum, if a principal becomes the amount of Rs. 7,100 in 7 years and Rs. 6,200 in 4 years, determine the principal and rate of simple interest in percent per annum.

After retirement Gobinda Babu got ₹ 5,00,000. He deposited a part of it in post office at 7.2% simple interest p.a. and the other part in a bank at 6% simple interest p.a. Every year he got ₹ 33,600 in total as interest from bank and post office. Find the amounts he deposited in bank and post office separately.

Find the mean proportion of xy² and xz²

The ratio of portion of profit of two friends is 1/2 : 1/3. Find the ratio of their capitals

If x be the number of edges of a parallelepiped and y be the number of surfaces then for what least value of a, (x + y + a) is a perfect square?

If sin (θ + 30°) = cos 15°, then find the value of cos 2θ.