Let SUM = X

First we will calculate the amount of money we get at simple interest rate of 10% for 2 years

Amount of money to be : X x 0,1 x 2 = 0,2 X

Second, at compound interest rate

Amount of money to be : 0,1 X in the first year, (X + 0,1X) x 0,1 in the second year Total = 0,1X + 0,11X

Then I can write the following equation:

0,1 X + 0,11 X - 0,2 X = 52 or 0,01 X = 52

Therefore X = Rs 5200