If the compound interest on a sum at the rate of 15% p.a. for 2 years is Rs. 225.75, then find simple interest of same amount for same year and same rate of interest.

210 223 215 230

210

C.I. @ 15%pa for 2 years = 32.25% S.I. @ 15%pa for 2 years = 30% ATQ, ⇒ P × 32.25% = 225.75 ⇒ P × 1% = \(\frac{225.75}{32.25}\) = 7 ⇒ P × 30% = 30× 7 = 210