Question

The difference between simple interest and compound interest on a certain sum of money for 2 years at 4%p.a. is ₹20.find the sum

Answer 1

hey here I'm using some trick....


$difference \: = \: \frac{ {pr}^{2} }{ {(100)}^{2} }$
20 = p × 4²/10000

p = 20 × 10000 / 16

p = 12500