CLAT - Mathematical Ability - Simple and Compound Interest

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Question - 1

The sum of Rs.2000 invested at 10% SI will become Rs.6000 in

  • A 10 years
  • B 20 years
  • C 30 years
  • D none of these

Question - 2

A sum of money doubles itself at CI in 15 years. In how many years will it becomes 8 times?

  • A 30
  • B 45
  • C 20
  • D 50

Question - 3

Ram and Shyam lent Rs.1682 at 5% CI annually. The amount Ram gets at the end of 3 years is the same as Shyam gets at the end of 5 years. The share of Ram and Shyam respectively in the principal is

  • A Rs.882, Rs.800
  • B Rs.800, Rs.882
  • C Rs.800, Rs.700
  • D Rs.700, Rs.800

Question - 4

What equal sums should be invested in 8% Rs.100 shares at Rs.120 and 9% noD shares at Rs.122 so that the total annual income is Rs.2570?

  • A Rs.18,800
  • B Rs.21,300
  • C Rs.18,300
  • D Rs.19,600

Question - 5

A and B invested some money at 6% and 7% p.a. of SI respectively. At the end.of two years so they found that combined they received Rs.354 as interest. One fourth of A's initial investment is equal to 1/5th of the money invested by B. Find the total money invested in Rs.

  • A 2900
  • B 2600
  • C 2700
  • D 2800

Question - 6

What is the approx. CI rate if an amount becomes 4 times in 10 years?

  • A 18%
  • B 15%
  • C 24%
  • D 14%

Question - 7

The population of a town grows at the rate of 20% every 5 years. In how many years will it double itself (approx.)

  • A 12
  • B 15
  • C 18
  • D 20

Question - 8

On what sum the difference between the SI and CI for 2 years at 10% amount to Rs.42?

  • A Rs.4000
  • B Rs.4100
  • C Rs.4200
  • D Rs.4300

Question - 9

At a certain rate of SI, Rs.15320 becomes Rs.30640 in 6 years what is the rate of interest?

  • A 12%
  • B 13%
  • C 14%
  • D 16.6%

Question - 10

A sum of money amounts to Rs.1180 and Rs.1300 in 3 years and 5 years respectively at SI. The money invested is

  • A Rs.90
  • B Rs.950
  • C Rs.1000
  • D Rs.1050
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