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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 acquires Rs 800 at the rate of 12% for each annum simple interest and B obtains Rs 910 at the rate of 10% for every annum basic interest. In how long will their measures of obligations be equivalent?
Answer : C
Explanation
Let the required time be x years. Then, 800+800 *12/100*x= 910+910*10/100*x => (96x-91x) =110 => 5x= 110 => x=22.
Q 2 - On the off chance that the basic simple interest on a certain total of cash for 15 months at 15/2 % p.a. surpasses the basic simple interest on the same aggregate for 8 months at 25/2 p.a. by Rs 32.50. The entirety is:
Answer : C
Explanation
Let the sum be rs. x. Then, (x* 15/2 *1/100*15/12)- (x*25/2*1/100*8/12) = 65/2 => 3x/32 ?x/12 = 65/2 => 9x-8x=3120 =>x= 3120 ∴ Sum = 3120
Q 3 - Simple interest on a sure whole at a sure yearly rate of interest is 25/16 of the entirety. In the event that the number speaking to rate percent and time in years is equivalent, then rate percent per annum is:
Answer : D
Explanation
Let the sum be Rs. x, Rate = R% P.a., time = 25/2 years. S.I = Rs. 25x/16 R = 100*25x/16 *1/x* 1/R => R2=2500/16 = R= 25/2 Hence, Rate = 25/2%
Q 4 - An aggregate of Rs 10000 is loaned mostly at 8% and the staying at 10% p.a. On the off chance that the year?s interest on the normal is 9.2% the cash loaned at 10% is:
Answer : A
Explanation
Ratio of investments = 0.8: 1.2: = 2:3 Money at 10% = Rs. (10000*3/5) = Rs. 6000>
Q 5 - The simple interest on a whole for a long time is two fifth of the entirety. The rate percent per P.a. is:
Answer : B
Explanation
Let the sum be Rs. x. Then, S.I = Rs.2x/5 Rate = (100*S.I)/ (p*t) = (100*2x/5* 1/x*1/5) % p.a = 8% p.a.
Q 6 - If the simple interest for 6 years be equal to 30% of the principal, it will be equal to the principal after
Answer : A
Explanation
Let's assume, principal = P and rate of interest = R% According to question, 30P/100 = P*R*6/100 or,R = 5% Now, let interest be equal to principal in T years. Hence, I = PTR/100 Or, P = PT*5/100 Or, R = 20 years
Q 7 - A sum of money becomes 7⁄6 of itself in 3 years at a certain rate of simple interest. The rate per annum is?
Answer : B
Explanation
Let sum be z. Then, Amount = 7z⁄6 S.I. = (7z⁄6 - 6) = z⁄6 years = 3 years. therefore Rate = 100 x z⁄z x 6 x 3 = 50⁄9 = 55⁄9
Q 8 - Peter invested an amount of Rs. 12000 at rate of interest of 10% p.a. simple interest and another amount at the rate of 20% p.a. simple interest. The total interest earned at the end of one year on the total amount invested became 14 p.c.p.a. Find the total amount invested?
Answer : A
Explanation
Let the second number be z. then,
(12000 x 10 x 1⁄100 + z x 20 x 1⁄100) = ((12000 + z) x 14 x 1⁄100) = 12000 + 20z = 168000 + 14z
= 6z = 48000
z = 8000
Therefore Total investment = Rs. (12000 + 8000) = 20000
Q 9 - At what rate percent per annum will a whole of cash twofold in 8 years?
Answer : B
Explanation
Let standard be Rs. P. at that point, S.I = Rs. P and time = 8 year ∴ Rate = (100*S.I)/P.T = (100*156/600*2) % p.a. = 13% p.a.