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Home Aptitude Simple Interest See What Others Are Saying!
  • Question
  • Question : What is the sum which earned interest ? Statements : a. The total simple interest was Rs. 9000 after 9 years. b. The total of sum and simple interest was double of the sum after 6 years.


  • Options
  • A. Only a is sufficient
  • B. Neither a nor b is sufficient
  • C. Only b is sufficient
  • D. Both a and b sufficient

  • Correct Answer
  • Both a and b sufficient 

    Explanation

    Let the sum be Rs. x

    a. gives, S.I = Rs. 9000 and time = 9 years.

    b. gives, Sum + S.I for 6 years = 2 x Sum

    --> Sum = S.I for 6 years.


    Now, S.I for 9 years = Rs. 9000

    S.I for 1 year = Rs. 9000/9 = Rs. 1000.

    S.I for 6 years = Rs. (1000 x 6)= Rs. 6000.

    --> x = Rs. 6000

    Thus, both a and b are necessary to answer the question.

  • Tags: GRE, GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk, Analyst

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