Simple & Compound Interest(Quantitative Aptitude > Interest ) Questions and answers for exam Preparation

Question 1031. What will be the compound interest on Rs 25000 after 3 years at 12% Per annum?

Discuss Question

Answer: Option E. -> None of these

C.I = [25000 Ã— (1+12/100)³-25000]
= Rs [(25000 Ã— 28/25 Ã— 28/25 Ã— 28/25)-25000]
=Rs(175616/5-25000)
= Rs (35123.20 “ 25000)
= Rs 10123.20

Question 1032. A deposited Rs 6000 in a bank at 5% Per annum simple interest. B deposited Rs 5000 at 8% P.a Compound interest. After 2 years the difference between their interest will be:

Rs 230
Rs 232
Rs 600
Rs 832

Discuss Question

Answer: Option B. -> Rs 232

S.I = Rs (6000 Ã— 5/100Ã—2)=Rs 600
C.I = Rs [5000 Ã— (1+8/100)²-5000]
= Rs [(5000 Ã— 27/25 Ã—27/25)-5000]
=Rs (5832-5000)=Rs 832
(c.I) “ (S.I) = Rs (832-600) = Rs 232

Question 1033. What will be ratio of simple to compound interest on two same sums invested in SBI at rate of interest of 8% kept for 3 years?

1875/2029
1/2.5
1903/2156
4/9

Discuss Question

Answer: Option A. -> 1875/2029

Question 1034. A sum of money deposited at C.I. amounts to Rs.2420 in 2 years and to Rs.2662 in 3 years. Find the rate percent?

15%
10%
7 1/2 %
8%

Discuss Question

Answer: Option B. -> 10%

2420 --- 242

100 --- ? =>
10%

Question 1035. A property decreases in value every year at the rate of 6 1/4% of its value at the beginning of the year its value at the end of 3 years was Rs.21093. Find
its value at the beginning of the first year?

Rs.25600.24
Rs.32000.50
Rs.18060.36
Rs.18600

Discuss Question

Answer: Option A. -> Rs.25600.24

6 1/4% = 1/16

x *15/16 * 15/16 * 15/16 = 21093

x = 25600.24

Question 1036. The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?

Discuss Question

Answer: Option B. -> 12%

5000 = 72(100/R)²

5 R² = 720 => R = 12

Question 1037. Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?

6 years
1 year
2 years
4 years

Discuss Question

Answer: Option D. -> 4 years

4
years

Question 1038. Find the sum lend at C.I. at 5 p.c per annum will amount to Rs.441 in 2 years?

Rs.420
Rs.400
Rs.375
Rs.380

Discuss Question

Answer: Option B. -> Rs.400

441 = P(21/20)²

P = 400

Question 1039. Find the amount on Rs.8000 in 9 months at 20% per annum, if the interest being compounded quarterly?

Rs.1261
Rs.9261
Rs.9621
Rs.9162

Discuss Question

Answer: Option B. -> Rs.9261

A =
8000(21/20)³ = 9261

Question 1040. Rajan borrowed Rs.4000 at 5% p.a compound interest. After 2
years, he repaid Rs.2210 and after 2 more year, the balance with interest. What
was the total amount that he paid as interest?