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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 - A man stored Rs 400 for a long time, Rs 550 for 4 year and Rs 1200 for 6 years. He got Rs 1020 as the aggregate simple interest. The rate of interest per annum is:
Answer : B
Explanation
Let the rate of interest be R% p.a. then, (400*R*2)/100 + (550*R*4)/100 + (1200*R*6)/100 = 1020 => 800R+2200R+7200R= 102000 => 10200R = 102000 => R = 10. Hence, the rate of interest is 10%.
Q 2 - In how long an entirety will be thrice of it at the rate of 10% for each annum?
Answer : B
Explanation
Let the sum be Rs.x. then, S.I = Rs. (3x-x) = Rs. 2x x*10/100 *t = 2x => t= 20 years.
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 - A cash bank finds that because of a fall in the yearly rate of interest from 8% to 31/4% his yearly salary reduces by Rs 61.50. His capital is:
Answer : C
Explanation
Let the capital be RS. x. then (x*8/100*1) ?(x*31/4*1/100*1) = 123/2 => 2x/25-31x/400 = 123/2 => 32x-31x = 24600 => x= 24600 Hence, the capital is Rs. 24600.
Q 5 - A sum of money doubles itself in 20 years. What is the rate of interest?
Answer : B
Explanation
Here, I = P. Given T = 20 years. R = ? We know, I = PTR/100 Or, R = I*100/PT = P*100/P*20 = 5%
Q 6 - What would be the simple interest obtained on an amount of Rs 6535 at the rate of 10% after 6 years?
Answer : B
Explanation
Simple Interest = PTR/100 = 6535 * 6 * 10/100 = Rs 3921
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 - A sure entirety of cash adds up to rs. 756 in 2 years and to Rs. 873 in 7/2 years. Discover the aggregate and the rate of hobby.
Answer : A
Explanation
Sum in 7/2 years = Rs. 873, sum in 2 years= Rs. 756 S.I for 3/2 year = Rs. (873-756) = Rs. 117 S.I for a long time = Rs. (117*2/3*2) = rs. 156. Standard = (sum in 2 year) - (s.I for 2 year) = Rs. (756-156)= Rs. 600 Presently P = 600 Rs. T= 2 years. What's more, S.I = 156 Rs. ∴ R = (100*S.I)/P*T = (100*156)/ (600*2) = 13% P.a. Henceforth, aggregate = Rs. 600 and Rate = 13% P.a.