Multiple choice

A sum of Rs. 2400 amounts to Rs. 3264 in 4 years at a certain rate of simple interest. If the rate of interest is increased by 1% the same sum in the same time would amount to- कोई धनराशि किसी साधारण ब्याज की दर से 4 वर्ष में रू. 2400 से रू. 3264 हो जाती है। यदि ब्याज दर 1% बढ़ा दी जाये तो उसी समय में बढ़ी धनराशि कितनी हो जायेगी ?

  1. 3288

  2. 3312

  3. 3340

  4. 3360
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Interest earned = 3264 - 2400 = 864 in 4 years. Rate = (864 × 100)/(2400 × 4) = 9% per annum. If rate increases by 1%, new rate = 10%. New interest = (2400 × 10 × 4)/100 = 960. New amount = 2400 + 960 = 3360.

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