Multiple choice

Two equal sums were lent out at 9% and 7% simple interest, respectively, The sum of simple interest earned for the two loans at the end of 3 years is Rs.480. What is each sum equal to? दो समान धनराशि क्रमशः 9% और 7% साधारण ब्याज की दर से ऋण पर दी गयी। 3 वर्ष की अवधि के बाद उन पर अर्जित साधारण ब्याज का योग 480रू. होता है तो प्रत्येक धनराशि क्या है?

  1. Rs./रु.1000

  2. Rs./रु.1500

  3. Rs./रु.1800

  4. Rs./रु.2000
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A Correct answer
Explanation

Let each sum be x. Total simple interest = x(9% × 3) + x(7% × 3) = x(27% + 21%) = x(48%). Given total interest = Rs.480, so 0.48x = 480, giving x = 1000. Each sum is Rs.1000. This is correct.

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