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Aptitude - Simple Interest Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Simple Interest. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - An aggregate of cash adds up to Rs 5200 in 5 years and to Rs 5680 in 7 years at basic premium. The rate of interest per annum is:

Answer : D

Explanation

S.I for 2 years = Rs. (5680-5200) = Rs. 480
S.I for 1 year = Rs. (480/2) = 240
S.I for 5 year = (240*5) = 1200 Rs.
Principle = Rs. (5200-1200) = 4000.
Rate = (1200*100/4000*5) %p.a. = 6% p.a.

Q 2 - A man contributes 1/3 of his capital at 7% p.a. 1/4 at 8% p.a. what's more, the rest of 10% p.a. In the event that his yearly wage is Rs 561, the capital is:

Answer : C

Explanation

Let capital be rs. x. then,
(x/3*7/100*1) +(x/4 * 8/100*1) + {x-(x/3+x/4)}*100*1= 561
=> 7x/300 +x/50 +5x/120 = 561 =>14x+12x +25 x = 336600
=> 51x = 336600 => x= 6600.

Q 3 - In the event that the yearly rate of simple interest increments from 10% to 25/2 %, a man yearly pay increments by Rs 1250. The primary is:

Answer : C

Explanation

Let the principle be rs. x. Then,
(x* 25/2*1/100*1)- (x*10/100*1) = 1250   => x/8 ?x/10 = 1250
=> 5x- 4x= 50000
 X= 50000.
Hence, the principle is Rs. 50000.

Q 4 - Rs. 6000 adds up to Rs. 7920 in 4 years at a sure rate of interest. On the off chance that the rate gets to be 1.5 times of itself, the measure of the same rule in 5 years will be:

Answer : B

Explanation

P = Rs. 6000, S.I = Rs. (7920-6000) = Rs. 1920, T= 4 years.
R = (100*1920/6000*4) = 8% p.a.
New rate = (1.5*8) % p.a. = 12% p.a.
Now = Rs. 6000, R= 12% p.a. and T = 5 years.
S.I = Rs. (6000*12/100*5) = Rs.3600
Amount = (6000+3600) = Rs. 9600.

Q 5 - Find the amount Shyam will get after 10 years when he invests Rs 100000 at 10% interest.

A - 50000

B - 100000

C - 200000

D - Cannot be determined

Answer : C

Explanation

A = P {(100+rt)/100}
=100000{(100 + 10*10)/100}
= 100000{200/100}
= 200000

Q 6 - In what time will the simple interest be 2/5 of the principal at 8 percent per annum?

Answer : C

Explanation

If Principal = Rs x, then I = 2x/5. Rate = 8 %

Time = I*100/P*R
= (2x/5)*100/x*8
= 5 years

Q 7 - A sum of money lent out at simple interest amounts to RS. 720 after 2 years and to 1020 after a further period of 5 years. The sum is?

Answer : B

Explanation

S.I. for 5 year = Rs. (1020 - 720) = 300
S.I. for 2 years = Rs. (^{300 x 2}⁄₅) = 120
Therefore Principal = (720 - 120) = 600

Q 8 - The difference between the simple interest received from two different sources on Rs. 1500 for 3 years is Rs. 13.50. The difference between their rate of interest is?

Answer : B

Explanation

(^{1500 x R₁ x 3}⁄₁₀₀) - (^{1500 x R₂ x 3}⁄₁₀₀) = 13.50
= 4500 (R₁ - R₂) = 1350
= R₁ - R₂ = ¹³⁵⁰⁄₄₅₀₀ = 0.3%

Q 9 - What yearly portion will release an obligation of Rs 4600 due in 4 years at 10% p.a. basic hobby?

Answer : C

Explanation

Let every portion be Rs x.
Unmistakably, first portion will be paid 1 year.
 This cash will be with the loan specialist for a long time.
 Correspondingly, he will have Rs x for a long time, and Rs x toward the end.
(Measure of Rs x for a long time) + (Amount of Rs x for a long time) + (Amount of Rs x for a long time) + Rs x = 4600.
∴ (x+x*10/100*3) + (x+x* 10/100*2) + (x+x*10/100*1) + x=4600
=> (x+3x/10) + (x+x/5) + (x+x/10) + x =4600
=> (13x/10 + 6x/5 + 11x/10+x) = 4600=> 46x=46000=>x=1000.
Henceforth each installment= Rs.1000

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