What is the difference between CI and SI for two years on sum of Rs.4800 at 15% per annum:

108 216 204 116

108

15% = \(\frac{3}{20}\) ⇒ \(\frac{Diff.}{Principal}\) = \(\frac{3^2}{20^2}\) = \(\frac{9}{400}\) ⇒ 400R = 4800 ⇒ 1R = 12 ⇒ Difference = 9R = 9 × 12 = 108   OR CI - SI = P (\(\frac{R}{100}\))2           = 4800 × \(\frac{15}{100}\) × \(\frac{15}{100}\)           = 108