📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      Suresh earned an interest of Rs. 1290 on principal

      amount of Rs. 4000 at some rate of compound interest in 2 years. How much more/less interest would he have earned on Rs. 4450 at the same rate of simple interest for the same duration?
      A Rs. 72 Correct Answer Incorrect Answer
      B Rs. 45 Correct Answer Incorrect Answer
      C Rs. 57 Correct Answer Incorrect Answer
      D Rs. 54 Correct Answer Incorrect Answer
      E Rs. 81 Correct Answer Incorrect Answer

      Solution

      Let, rate of interest be ‘r’% per annum So, 1290 = 4000 × {(1 + r/100)2 – 1} 129/400 = {(1 + r/100)2 – 1} 529/400 = (1 + r/100)2 (23/20)2 = (1 + r/100)2 23/20 = 1 + r/100 3/20 = r/100, r = 15 So, simple interest earned = 4450 × 0.15 × 2 = Rs. 1335 Required amount = 1335 – 1290 = Rs. 45

      Practice Next
      More Simple and compound interest Questions

      Relevant for Exams:

      ask-question