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Question 51Asked in DSSSB TGT Computer Science, 7 Feb 2024, Shift 2 (12:30 PM)

Simple interest and compound interest (compounding annually) on a principal at a

Simple interest and compound interest (compounding annually) on a principal at a certain rate of interest for 2 years is Rs. 28800 and Rs. 36000 respectively. What is the principal?
  1. ARs. 30000
  2. BRs. 28800
  3. CRs. 29750
  4. DRs. 28850
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Correct answer: (B) Rs. 28800

Explanation

SI per year = 28800/2 = 14400. CI − SI = 7200 is interest on the first year's interest, so rate = 7200/14400 = 50 percent. Principal = 14400 / 0.5 = Rs. 28800.

From DSSSB TGT Computer Science PYQ, 7 Feb 2024, Shift 2 (12:30 PM)

This is question 51 of DSSSB TGT Computer Science PYQ, 7 Feb 2024, Shift 2 (12:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.