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Rs.5000 was invested at 12% per annum simple interest and a certain sum of money invested at 10% per annum simple interest. If the sum of the interest on both the sum after 4 years is Rs.4800, then find the sum of money which was invested at 10%:1. Rs.60002. Rs.45003. Rs.75004. Rs.5500 |
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Answer» Correct Answer - Option 1 : Rs.6000 Given: Principal (P1) = 5000, Rate (R1) = 12%, Time (T) = 4 years Principal (P2) = x, Rate (R2) = 10%, Time (T) = 4 years Formula Used: Simple Interest (I) = (P × R × T)/100 Where, P → Principal R → Rate T → Time Calculations: Simple interest gained from 5000 = (5000 × 12 × 4)/100 = 2400 Let the other Principal be x. S.I. gained = (4800 – 2400) = 2400 ⇒ (x × 10 × 4)/100 = 2400 ⇒ x = Rs. 6000 ∴ The correct answer is Rs. 6000. |
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