Practicing Success
Rs.9478 is invested in two parts at the rate of 8% per annum compounded annually for 8 years and 6 years respectively. If amount received on both investments is equal, then find the difference between both investments. |
Rs. 264 Rs. 728 Rs. 832 Rs. 1128 |
Rs. 728 |
Let amount invested for 8 years is P1 & amount invested for 6 years is P2. ATQ, ⇒ P1 (1+ \(\frac{8}{100}\))8 = P2(1+ \(\frac{8}{100}\))6 ⇒ P1 (1+ \(\frac{8}{100}\))2 = P2 ⇒ P1 (\(\frac{27}{25}\))2 = P2 ⇒ P1 (\(\frac{729}{625}\)) = P2 ⇒ P1 : P2 = 625 : 729 → 1354 (Total) Here, ⇒ 1354 R = 9478 ⇒ 1R = 7 Hence, Difference of parts = (729 - 625)R = 104R = 104 x 7 = 728 |