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  9. Q7

RRB Junior Engineer / DMS / CMA 2015 · Question 7 of 480

The compound interest on rupees 12000 for 1 yr at 10% per annum compounded half yearly is

Mathematics - Simple and Compound Interest

  1. Aa. ₹ 1200
  2. Bb. ₹ 1230Correct
  3. Cc. ₹ 2520
  4. Dd. ₹ 2580

Answer: B. b. ₹ 1230

Explanation

Here, P = ₹ 12000, n = 1 yr, r = 10% per annum v Interest due to half yearly .-. a = 1x2 =2, r = — = 5% 2 CI = P 1+- 100 -1 = 12000 = 12000 = 12000 x - i+-T iooJ : ₹1230 "441 _ 400 41 400

Source: Arihant RRB JE Solved Paper 26-Aug-2015 (3rd Shift), Q91–150 — published solved-paper compilation (Q1–90 technical not included in this source) · memory-based

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