Simple Interest - Arithmetic Aptitude Questions and Answers

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How much interest can a person get on Rs. 8200 at 17.5% p.a. simple interest for a period of two years and six months?

Rs. 3770

Rs. 2850.50

Rs. 3587.50

Rs. 3750

None of these

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In how many years does a sum of Rs. 5000 yield a simple interest of Rs. 16500 at 15% p.a.?

None of these

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A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?

Rs. 12000; 12% p.a.

Rs. 14000; 12% p.a.

Rs. 12000; 15% p.a.

Rs. 14000; 15% p.a.

None of these

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Answer : Option B

Explanation :

Let the interest for one year be x.

As amount = Principal + Interest, we have

A sum of money triples itself in twelve years at simple interest. Find the rate of interest?

12 1/2 % p.a.

14 4/7 % p.a.

15 2/3 % p.a.

13 3/8 % p.a.

None of these

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A certain sum is invested at simple interest at 18% p.a. for two years instead of investing at 12% p.a. for the same time period. Therefore the interest received is more by Rs. 840. Find the sum?

Rs. 7000

Rs. 8500

Rs. 8000

Rs. 7500

None of these

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Answer : Option A

Explanation :

Let the sum be Rs. x.

(x * 18 * 2)/100 - (x * 12 * 2)/100 = 840 => 36x/100 - 24x/100 =840

An amount of Rs. 3000 becomes Rs. 3600 in four years at simple interest. If the rate of interest was 1% more, then what was be the total amount?

Rs. 3800

Rs. 3780

Rs. 3720

Cannot be determined

None of these

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Answer : Option C

Explanation :

A = P(1 + TR/100)

=> 3600 = 3000[1 + (4 * R)/100] => R = 5%

A certain sum becomes four times itself at simple interest in eight years. In how many years does it become ten times itself?

None of these

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Answer : Option E

Explanation :

Let the sum be Rs. x, then it becomes Rs. 4x in eight years Rs. 3x is the interest on x for eight years.

R = (100 * 3x)/(x * 8) = 300/8 %

At what rate of interest is an amount doubled in two years, when compounded annually?

30%

41.4%

45.2%

73.2%

None of these

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Vijay lent out an amount Rs. 10000 into two parts, one at 8% p.a. and the remaining at 10% p.a. both on simple interest. At the end of the year he received Rs. 890 as total interest. What was the amount he lent out at 8% pa.a?

Rs. 6000

Rs. 5500

Rs. 4500

Rs. 5000

None of these