Multiple choice

A sum was invested, on simple interest at a certain rate for 2 years. Had it been put at 3% higher rate, it would have fetched Rs.144 more. The sum is एक राशि को साधारण ब्याज की किसी दर पर 2 वर्ष के लिए निवेश किया गया। यदि उसका निवेश 3% अधिक दर पर किया गया होता तो 144 रू. अधिक मिलते। राशि है

  1. Rs.2400

  2. Rs.2600

  3. Rs.2000

  4. Rs.3000
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Additional interest at 3% higher rate for 2 years = P × 3/100 × 2 = 144. So P × 0.06 = 144, giving P = 144/0.06 = Rs. 2400. Verification: At original rate r, interest = 2400 × r × 2. At (r+3)%, interest = 2400 × (r+3) × 2. Difference = 2400 × 3 × 2 = 14400 × 0.01 = Rs. 144. Option A is correct.

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