# 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 - Basic simple interest on Rs 500 for a long time at 6.25% for each annum is equivalent to the simple enthusiasm on Rs 400 at 5% for every annum for a certain timeframe. The timeframe is:

### Answer : C

### Explanation

Let the Required period of time be x years. Then, 500*4*625/100 = 20*x=> x= 6.25 =625/100= 25/4 years.

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 - The distinction between the basic interests got from two unique sources on Rs 1500 for a long time is Rs 13.50. The contrast between their rates of interest is:

### Answer : C

### Explanation

Let the rates of interest be x% p.a. Then, (1500*x/100*3) ? (1500*y/100*3) =27/2 45(x-y) =27/2 => (x-y) = (27/2* 1/45)=3/10=0.3 Required difference = 0.3%

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 - 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 - 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 - The simple interest on a sum of money is 4/9 of the principal and the number of years is equal to the rate percent per annum. The rate per annum is

### Answer : B

### Explanation

We know, I = PTR/100 According to question, I = 4P/9 and r = t 4P/9 = P*r*r/100 Or, r2 = 400/9 Or, r = 20/3

Q 8 - David invested certain amount in three different schemes P,Q, and R with the rate of interest 10% p.a., 12% p.a., and 15% p.a. respectively. If the total interest accrued in one year was Rs. 3200 and the amount invested in scheme R was 150% of the amount invested in scheme P and 240% of the amount invested in scheme Q, what was the amount invested in scheme Q?

### Answer : C

### Explanation

Let a, b ,c be the amounts invested in schemes P, Q, R respectively. Then,^{a x 10 x 1}⁄_{100}+^{b x 12 x 1}⁄_{100}+^{c x 15 x 1}⁄_{100}= 3200 10a + 12b + 15c = 320000.....(i) c = 240% of b =^{12b}⁄_{5}...(ii) and c = 150% of a =^{3a}⁄_{2}a =^{2c}⁄_{3}= (^{2}⁄_{3}x^{12}⁄_{5})b =^{8b}⁄_{5}.....(iii) from (i), (ii), (iii), we have. 16b + 12b + 36b = 320000 64b = 320000 b = 5000 Sum invested in Scheme Q = Rs. 5000.

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.