Multiple choice

Rohit lent out some amount of money at 15% simple interest and an equal amount of money at 12% simple interest for 3 years. If the difference of interest after 3 year is Rs.2520, what amount was lent out in each case? रोहित ने कुछ राशि 15% साधारण ब्याज पर और उतनी ही राशि 12 % साधारण ब्याज की दर पर 3 वर्षो के लिए उधार दिया। यदि तीन वर्ष के बाद ब्याज का अंतर 2520 रु. हैं , तो प्रत्येक स्थिति में कितनी राशि दी गई थी?

  1. Rs.28500

  2. Rs.35000

  3. Rs.56000

  4. Rs.28000
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D Correct answer
Explanation

Let amount lent at each rate = P. Interest at 15% for 3 years = P × 15 × 3/100 = 0.45P. Interest at 12% for 3 years = P × 12 × 3/100 = 0.36P. Difference = 0.45P - 0.36P = 0.09P = 2520. Therefore P = 2520/0.09 = Rs. 28,000.

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