Rs. 800 amounts to Rs. 920 in 3 years at simple interest. If the interest rate is increased by 3%, it would amount to how much ?
Correct answer: A. Rs. 992
- A. Rs. 992
- B. Rs. 1112
- C. Rs. 1056
- D. Rs. 1182Educational Resources
Explanation
The interest earned is Rs. 920 - Rs. 800 = Rs. 120 in 3 years, so the rate is Rs. 120/(Rs. 800 x 3 years) = 5% per annum. Increasing this by 3 percentage points gives 8% per annum, and the new amount is Rs. 800 x (1 + 0.08 x 3) = Rs. 992. The likely trap is Rs. 1056, which uses 8% as a one-year addition rather than applying it for 3 years.
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Profit and loss compare the cost price and selling price of an item, using profit or loss percentages based on the cost price unless stated otherwise. Questions include marked price, discount, successive discounts, commission, and finding an unknown price, with care needed to distinguish discount from loss.
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