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Arithmetic Ability
Interest
Quiz 1
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Q.1
In how much time would the simple interest on a certain sum be 0.125 times the principal at 10% per annum?
$$1\frac{1}{4}$$ years
$$1\frac{3}{4}$$ years
$$2\frac{1}{4}$$ years
$$2\frac{3}{4}$$ years
Q.2
The simple interest on a sum of money at 8% per annum for 6 years is half the sum. The sum is:
Rs. 4800
Rs. 6000
Rs. 8000
Date inadequate
Q.3
If a sum doubles in 6 years, how much will it be in 8 years ?
$$1\frac{1}{2}$$ times
$$1\frac{1}{3}$$ times
$$1\frac{1}{4}$$ times
$$1\frac{3}{4}$$ times
Q.4
In how many years will a sum of money double itself at 18.75% per annum simple interest?
4 years 5 months
5 years 4 months
6 years 2 months
6 year 5 months
Q.5
The simple interest on a sum of money is $$\frac{1}{4}$$ of the principal and the number of years is equal to rate percent per annum. The rate percent is = ?
2.5%
5%
7.5%
10%
Q.6
The population of a village decreases at the rate of 20% per annum. If its population 2 years ago was 10000, the present population is = ?
4600
6400
7600
6000
Q.7
Rs. 12000 is divided into two parts such that simple interest on the first part for 3 years at 12% per annum may be equal to the simple interest on the second part for $$4\frac{1}{2}$$ years at 16% per annum. The ratio of the first part to the second part is = ?
2 : 1
1 : 2
2 : 3
3 : 2
Q.8
Consider the following statements
If a sum of money is lent at simple interest, then the
I - money gets doubled in 5 years if the rate of interest is $$16\frac{2}{3}$$ %
II - money gets doubled in 5 years if the rate of interest is 20%.
III - money becomes four times in 10 years if it gets doubled in 5 years.
I and III are correct
II alone is correct
III alone is correct
II and III are correct
Q.9
In a certain time, the ratio of a certain principal and interest obtained from it are in the ratio 10 : 3 at 10% interest per annum. The number of years for which the money was invested is = ?
1 year
3 year
5 year
7 year
Q.10
In how many years will the simple interest on a sum of money be equal to the principal at the rate of $$16\frac{2}{3}$$ % per annum ?
4 years
5 years
6 years
8 years
Q.11
A sum of money was invested at a certain rate of simple interest for 2 years. Had it been invested at 1% higher rate, it would have fetched Rs. 24 more interest. The sum of money is ?
Rs. 1200
Rs. 1050
Rs. 1000
Rs. 9600
Q.12
A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both as interest. The rate of interest per annum is = ?
7%
5%
$$7\frac{1}{8}$$ %
10%
Q.13
What annual installment will discharge a debt of Rs. 6450 due in 4 years at 5% simple interest = ?
Rs. 1500
Rs. 1835
Rs. 1935
Rs. 1950
Q.14
A person who pays income tax at the rate of 4 paise per rupee, find that fall of interest rate (income tax) from 4% to 3.75% diminishes his net yearly income by Rs. 48. What is his capital ?
Rs. 24000
Rs. 25000
Rs. 20000
Rs. 18000
Q.15
Jhon invested a sum of money at an annual simple interest rate of 10%. At the end of four years the amount invested plus interest earned was Rs. 770. The amount invested was = ?
Rs. 650
Rs. 350
Rs. 550
Rs. 500
Q.16
In what time will Rs. 1860 amount to 2641.20 at simple interest 12% per annum ?
3 years
$$3\frac{1}{2}$$ years
4 years
$$4\frac{1}{2}$$ years
Q.17
A man invests half of his capital at the rate of 10% per annum, one - third at 9% and the rest at 12% per annum. The average rate of interest per annum, which he gets is = ?
9%
10%
10.5%
12%
Q.18
A sum of money at simple interest doubles in 7 years. It will become four times in:
18 years
21 years
38 years
42 years
Q.19
A sum of money lent out at simple interest amounts to Rs. 720 after 2 years and to Rs.1020 after a further period of 5 years. The sum is
Rs. 500
Rs. 600
Rs. 700
Rs. 710
Q.20
A sum of money becomes Rs. 20925 in 2 years and Rs. 24412.50 in 5 years. Find the rate of interest and the sum of money.
6.25%, Rs. 18600
6.75%, Rs. 17775
7%, Rs. 18000
8%, Rs. 17560
Q.21
A sum of Rs. 10 is lent to be returned in 11 monthly instalments of Rs. 1 each, interest being simple. The rate of interest is:
$$9\frac{1}{{11}}$$ %
10%
11%
$$21\frac{9}{{11}}$$ %
Q.22
A computer is available for Rs. 39000 cash or Rs. 17000 as cash down payment followed by five monthly instalments of Rs. 4800 each. What is the rate of interest under the instalment plan?
35.71 % p.a.
36.71 % p.a.
37.71 % p.a.
38.71 % p.a.
Q.23
If the rate increases by 2%, the simple interest received on a sum of money increases by Rs. 108. If the time period is increased by 2 years, the simple interest on the same sum increases by Rs. 180. The sum is:
Rs. 1800
Rs. 3600
Rs. 5400
Data inadequate
None of these
Q.24
A sum was put at simple interest at a certain rate for 3 years. Had it been put at 1% higher rate, it would have fetched Rs. 5100 more. The sum is
Rs. 1, 20, 000
Rs. 1, 25, 000
Rs. 1, 50, 000
Rs. 1, 70, 000
Q.25
Two equal sums of money are lent at the same time at 8% and 7% per annum simple interest. The former is recovered 6 months earlier than the latter and the amount in each case is Rs. 2560. The sum and the time for which the sums of money are lent out are.
Rs. 2000, 3.5 years and 4 years
Rs. 1500, 3.5 years and 4 years
Rs. 2000, 4 years and 5.5 years
Rs. 3000, 4 years and 4.5 years
Q.26
A sum of Rs. 7930 is divided into 3 parts and given at loan at 5% simple interest to A, B and C for 2, 3 and 4 years respectively. If the amounts of all three are equal after their respective periods of loan, then the A received a loan of = ?
Rs. 2800
Rs. 3050
Rs. 2750
Rs. 2760
Q.27
A boy aged 12 years is left with Rs. 100000 which is under a trust. The trustees invest the money at 6% per annum and pay the minor boy a sum of Rs. 2500, for his pocket money at the end of each year. The expenses of trust come out to be Rs. 500 per annum. Find the amount that will be handed over to the minor boy after he attains the age of 18 years ?
Rs. 125000
Rs. 118000
Rs. 150000
Rs. 120000
Q.28
The simple interest on Rs. 36000 for the period from 5
th
January to 31
st
May, 2013 at 9.5% per annum is = ?
Rs. 1368
Rs. 1338
Rs. 1425
Rs. 1400
Q.29
What equal installment of annual payment will discharge a debt which is due as Rs. 848 at the end of 4 years at 4% per annum simple interest ?
Rs. 200
Rs. 212
Rs. 225
Rs. 250
Q.30
A man buys a TV priced at Rs. 16000. He pays Rs. 4000 at once and the rest after 15 months on which he is charges a simple interest at the rate of 12% per year. The total amount he pays for TV is = ?
Rs. 18200
Rs. 17200
Rs. 17800
Rs. 16800
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