Practicing Success
If the annual rate of simple interest increases from 11% to $17\frac{1}{2}$, then a person’s yearly income increases by ₹1,071.20. The simple interest (in ₹) on the same sum at 10% for 5 years is: |
16,480 9,120 8,240 7,250 |
8,240 |
Principal ( P) = Rs P Rate of simple interest increases from 11% to $17\frac{1}{2}$ and so Difference Between two Interest Rates = 17.5 - 11% = 6.5% ATQ 6.5% = Rs 1071.20 1% = Rs 164.8 100% = Rs 164800 now Principal = Rs 16480 Rate ( R) = 10% time ( T) = 5 years Interest = \(\frac{Principal ×Rate × Time }{100}\) =\(\frac{ 16480 × 10 × 5 }{100}\) = Rs 8240 |