- Aptitude - Home
- Aptitude - Overview
- Quantitative Aptitude
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 - How crunch simple interest will Rs 2000 win in year and a half at 6% for every annum?
Answer : B
Explanation
S.I = Rs. (2000*18/12*6/100) = Rs. 180.
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 - An entirety of cash contributed at a sure rate of simple interest pairs itself in 12 years 6 months. It will treble itself at the same rate of interest for.
Answer : D
Explanation
Let the sum be Rs. x. then S.I. = Rs. x, time = 25/2 years. Rate = (100*S.I/ sum*time) = (100*x*2/x*25) % p.a. = 8% p.a. Now, sum = RS. x, S.I= Rs. (3x-x) = Rs. 2x, Rate= 8% p.a. Time = (100*S.I/ sum*Rate) = (100*2x/x*8) = 25 years.
Q 4 - An acquires Rs 8000 at 12% p.a simple interest and B gets Rs 9100 at 10%p.a. simple interest . In how long will their measures of obligations be equivalent?
Answer : C
Explanation
Let the required time be x years. Then, 8000+8000*12/100*x= 9100+9100*10/100*x => 50x =1100 => x= 22 years
Q 5 - With a given of rate of basic interest, the proportion of standard and measure of a sure timeframe is 4:5 , following 3 years , with the same rate of interest , the proportion of the rule and sum gets to be 5:7 , the rate of interest per annum is :
Answer : B
Explanation
After t years, let P =Rs. 4x and amount = Rs. 5x.
P + S.I for t years = Rs. 5x
P: {p+S.I for (t+3) years} = 5:7= 1: 7/5 = 4x: (7/5*4x) = 4x: 28x/5
∴ P+S.I. For (t+3) years = Rs. 28x/5
On subtracting (i) from (ii), we get:
S.I for 3 years = Rs. (28x/5 -5x) = Rs. 3x/5
S.I on Rs. 4x for 3 years = 3x/5
∴ Rate = {(100*3x/5)/ (4x*3)} % p.a. = 5% p.a.
Q 6 - Amit invests a certain sum at 10% per annum simple interest. In how many years will it become 5 times?
Answer : C
Explanation
We know, R = 100(n - 1)/t Or, t = 100(n - 1)/R = 100(5 - 1)/10 = 100*4/10 = 40 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 - 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 of them as interest. The rate of interest per annum is?
Answer : D
Explanation
Let the rate be R% p.a. Then, 5000 x R x 2⁄100 + 3000 x R x 4⁄100 = 2200 = 100R + 120R = 2200 R = 2200⁄220 R = 10%
Q 9 - An entirety of Rs 600 adds up to Rs 720 in 4 years. What will it add up to if the rate of interest is expanded by 2%?
Answer : A
Explanation
P= RS. 600, S.I = Rs. (720-600) = Rs. 120, T = 4 years. Rate = (100* 120/ 600*4) % = 5% p.a. New rate = 7% P.a., P = Rs. 600 and T = 4 years. S.I = Rs. (600* 7/100*4) = Rs. 168 Thus new amount will be 600 + 168 = Rs 768.