Multiple choice

Find which information are necessary to answer the question asked. Find the rate of simple interest per annum. I. Meetu borrowed Rs 9000 from Sneha for two years on simple interest. II. Meetu returned Rs 11700 to Sneha at the end of two years and settled the loan. III. A sum of money becomes double in 20/3 years on simple interest.

  1. All three together are sufficient

  2. I and III

  3. III or (I and II)

  4. All three together are not sufficient

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For simple interest rate: Statement III says money doubles in 20/3 years, so interest = principal in 20/3 years, giving rate directly (P = P×R×20/3÷100, so R = 15%). Alternatively, Statements I and II together: Principal = 9000, Amount = 11700, so Interest = 2700 over 2 years, giving R = 15%. Either method works, so 'III or (I and II)' is correct.

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