Multiple choice

The simple interest on a sum of money will be Rs.190 after 7 years. In the next 7 years principal becomes 3 times, what will be the total interest at the end of the 14th year?

  1. Rs. 720

  2. Rs. 760

  3. Rs. 740

  4. Rs. 730

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let principal be P and rate be R%. SI = P×R×7/100 = Rs 190, so P×R = 19000/7. After 7 years, new principal = 3P. Interest for next 7 years = 3P×R×7/100 = 3 × (P×R×7/100) = 3 × 190 = Rs 570. Total interest = 190 + 570 = Rs 760.

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