Sahil borrowed Rs. 7200 from bank for some project at simple interest. After a period of 3 years, the amount will be Rs. 9576. What was the double of the rate of interest?

10% 11% 22% 20%

22%

A = 9576,  P 7200                                 SI for 3 years = 9576 - 7200 = 2376                SI for 1 year = 792                                 Rate = \(\frac{792}{7200}\) × 100% = 11% double of rate = 22%