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Home Aptitude Compound Interest See What Others Are Saying!
  • Question
  • A sum of money put out at compound interest amounts in 2 years to Rs. 578.40 and in 3 years to Rs. 614.55. Find the rate of interest?


  • Options
  • A. 6%
  • B. 61/4%
  • C. 61/2%
  • D. 63/4%

  • Correct Answer
  • 61/4% 

    Explanation

    Clearly the difference between Rs. 578.40 and Rs.614.55 is the interest on Rs. 578.40 for 1 year.
    ? Interest on Rs. 578.40 for 1 year = Rs. 614.55 - Rs. 578.40 = Rs. 36.15
    ? Interest on Rs.100 for 1 year = Rs. (36.15 x 100)/578.40
    = Rs. 3615/57840 x 100/1
    = Rs. 6.25
    = Rs. 61/4

    ? The required rate is .61/4 percent.


  • More questions

    • 1. 
      A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in?

    • Options
    • A. 3 days
    • B. 5 days
    • C. 7 days
    • D. 11 days
    • Discuss
    • 2. 
      A and B together can do a work in 8 days. If A alone can do it in 12 days, then in how many days can B alone do it?

    • Options
    • A. 12 days
    • B. 20 days
    • C. 24 days
    • D. 28 days
    • Discuss
    • 3. In How many ways is it possible to make a selection by taking any number of 15 fruits, namely 3 oranges, 5 apples and 7 mangoes?

    • Options
    • A. 131
    • B. 191
    • C. 68
    • D. 3720
    • Discuss
    • 4. 
      Rohan and Sunil separately can complete a work in 8 hours and 4 hours respectively. How much time will they take when working together?

    • Options
    • A. 22/3
    • B. 11/3
    • C. 3 hours
    • D. 2 hours
    • Discuss
    • 5. How many 6-digit even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 and 7 so that the digits should not repeat and the second last digit is even ?

    • Options
    • A. 521
    • B. 720
    • C. 420
    • D. 225
    • Discuss
    • 6. In how many different ways can the letters of the word 'THERAPY' be arranged so that the vowels always come together?

    • Options
    • A. 720
    • B. 1440
    • C. 1800
    • D. 3600
    • Discuss
    • 7. A card is drawn from a pack of 52 cards. What is the probability that either card is black or a king?

    • Options
    • A. 15/52
    • B. 17/26
    • C. 13/17
    • D. 15/26
    • Discuss
    • 8. If (1 × 2 × 3 × 4 ........ × n) = n!, then 15! - 14! - 13! is equal to ___?

    • Options
    • A. 14 × 13 × 13!
    • B. 15 × 14 × 14!
    • C. 14 × 12 × 12!
    • D. 15 × 13 × 13!
    • Discuss
    • 9. How many numbers of five digits can be formed by using the digits 1, 0, 2, 3, 5, 6 which are between 50000 and 60000 without repeating the digits?

    • Options
    • A. 120
    • B. 240
    • C. 256
    • D. 360
    • Discuss
    • 10. 
      A can do a piece of work in 12 days. B is 60% more efficient than A. The number of days, it take B to do the same piece of work is?

    • Options
    • A. 71/2
    • B. 61/4
    • C. 8
    • D. 6
    • Discuss


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