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 - Rs 6000 get to be Rs 7200 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 central in 5 years will be:
Answer : B
Explanation
S.I on Rs 6000 for 4 years= (7200-6000) = 1200 Rs. ∴ Rate = (100*1200/6000*4) % p.a. = 5% p.a New rate = (5*3/2) % = 15/2% P.a. Required amount = [6000+ (6000*5/100*15/2)] = Rs. (6000+2250) = Rs. 8250.
Q 2 - A certain total of cash gets to be three times of itself in20 years at basic premium. In how long does it turns out to be twofold of itself at the same rate?
Answer : B
Explanation
Let the sum be Rs. x. Then, S.I in 20 years = Rs. (3x-x) = Rs.2x Rate = (100*S.I/ R*T) = (100*2x/x*20) % P.a. = 10% P.a. Now, sum = Rs. x, Rate = 10% P.a., S.I = Rs. x. ∴ Time = (100*s.I/ P*R) = (100*x/x*10) years = 10 years.
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 - What yearly installment will release an obligation of Rs 580 due in 5 years at 8% p.a.?
Answer : C
Explanation
Let the required annual installment be Rs. x. then, (Amount of Rs. x for 4 year) + (amount of Rs. x for 3 year) + (amount of Rs.x for 2 year) + (amount of Rs.x for 1 year) + Rs. x = 580 => (x+ x*8*4/100) +(x+ x*8*3/100) + (x+ x*8*2/100) + (x+ x*8*1/100) +x= 580 => (x+ 8 x/25) +(x+ 6 x/25) + (x+ 4 x/25) + (x+ 2 x/25) +x = 580 => 33x/25 + 31x/25 + 29x/25+ 27x/25+x = 580 => (33x+31x+29x+27X+25x) = 14500 =>145x = 14500 => x= 100. Required installment = Rs. 100.
Q 5 - A man disperses Rs. 25300 among his three children A, B, C. In a manner that the measure of there at 10% simple interest for a long time, 3 years and 4 years will be equivalent an offer is:
Answer : C
Explanation
Let the parts of A, B, C be x, Y, z respectively. Then (x+ x*2*10/100)= (Y+ y*3*10/100) = (z+ z*4*10/100) => 6x/5 =13y/10 = 7z/5 =ℏ = 5ℏ/6, y = 10ℏ/13, z= 5ℏ/7 => x: y: z = 5ℏ /6:10ℏ/13 :5ℏ/7 = 1/6:2/13: 1/7 = 91: 84: 78 A's part = Rs. (25300*91/253) = Rs. 9100.
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 - At what rate percent per annum will the simple interest on a sum of money be 2⁄5 of the amount in 10 years?
Answer : A
Explanation
Let sum be z. Then, S.I. = (2z⁄5) Time = 10 Rate = (100 x 2z⁄z x 5 x 10) = 4%
Q 8 - A sum of Rs. 725 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of Rs. 362.50 more is lent but at the rate twice the former. At the end of the year, Rs. 33.50 is earned as interest from both the loans. What was the original rate of interest?
Answer : A
Explanation
Let original rate be R%. Then, new rate = (2R)% therefore 725 x R x 1⁄100 + 362.50 x 2R x 1⁄100 x 3 = 33.50 = (2175 + 725) R = 33.50 x 100 x 3 = 10050 = R = 10050⁄2900 = 3.46%
Q 9 - A person invested in all Rs. 2600 at 4%, 6%, and 8% per annum simple interest. At the end of the year, he got the same interest in all the three cases. The money invested at 4% is?
Answer : A
Explanation
Let the parts be a,b and [2600 - (a + b)] then, a x 4 x 1⁄100) = (b x 6 x 1⁄100) = ([2600 - ( a + b)] x 8 x 1⁄100) = b⁄a = 4⁄6 = 2⁄3 or y = 2a⁄3 So, a x 4⁄100 (7800 - 5a) x 8⁄3 = 52a = (7800 x 8)
a = 7800 x 8⁄52 = 1200
