8000 become Rs.9261 in a certain interval of time at the rate of 5% per annum of C.I. Find the time?

A. 4 years

B. 6 years

C. 2 years

D. 3 years

Ans:D

Explanation:

Rs 8,000 became Rs 9,261 in a certain interval of time at the rate of 5% per annum, Compound.Interest.. Find the time. 9,261 = 8,000(1.05)^t t = 3 The time is 3 years.

A sum of money place at compound interest doubles itself in 4 years. In how many years will it amount to eight times itself?

A. 16

B. 8

C. 12

D. 20

Ans:C

Explanation: 100 —- 200 —- 4 400 —- 4 800 —- 4

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?

A. 25600.24

B. 32000.50

C. 18060.36

D. 18600

Ans:A

Explanation: 6 1/4% = 1/16 x *15/16 * 15/16 * 15/16 = 21093 x = 25600.24

A certain sum of money amounts to Rs.1300 in 2 years and to Rs. 1525 in 3.5 years. Find the sum and the rate of interest.

A. Rs850, 10%

B. Rs900, 12%

C. Rs800, 13%

D. Rs1000,15%

Ans:D

Explanation: 1525-1300= 225 for 1.5 yrs (3.5-2) so for one yr 225/1.5= 150 then for 2 yrs interest is 150+150=300 Then principal 1300-300=1000. Now 150/1000*100= 15%

If the simple interest on a certain sum of money is 4/25 of the sum and the rate percent equals the number years, then the rate of interest per annum is:

A. 4%

B. 5%

C. 8%

D. 10%

Ans:A

Explanation: Let the principal be Rs x. Then the SI =4/25x Rate of interest = Time r= (100*4/25x)/ x*r r2 =400/25 r=20/5=4%

Find the compound interest on Rs. 20,000 in 2 years at 4 % per annum, the interest being compounded half-yearly.

A. Rs 1648.64

B. 1596.32

C. 14826.56

D. 11563.99

Ans:c

5887 is divided between Shyam and Ram, such that Shyam’s share at the end of 9 years is equal to Ram’s share at the end of 11 years, compounded annually at the rate of 5%. Find the share of Shyam

A. 2088

B. 2000

C. 3087

D. None of these

Ans:C

Explanation: Shyam’s share * (1+0.05)9 = Ram’s share * (1 + 0.05)11 Shyam’s share / Ram’s share = (1 + 0.05)11 / (1+ 0.05)9 = (1+ 0.05)2 = 441/400 Therefore Shyam’s share = (441/841) * 5887 = 3087

Vijay invested Rs.50,000 partly at 10% and partly at 15%. His total income after a year was Rs.7000. How much did he invest at the rate of 10%?

A. 40,000

B. 40,000

C. 12,000

D. 20,000

Ans:B

There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate?

A. 2160

B. 3120

C. 3972

D. 6240

Ans:3972

Explanation: Let P = Rs. 100. Then, S.I. Rs. 60 and T = 6 years.

R = | 100 x 60 | = 10% p.a. | ||

100 x 6 |

Now, P = Rs. 12000. T = 3 years and R = 10% p.a.

C.I. |
| |||||||||||||

| ||||||||||||||

= 3972. |

Akash invested an amount of Rs. 8000 in a fixed deposit scheme for 2 years at compound interest rate 5 p.c.p.a. How much amount will Akash get on maturity of the fixed deposit?

A. 8600

B. 8620

C. 8820

D. None of these

Ans:C

Explanation: Amount

= Rs. | 8000 x | 1 + | 5 | 2 | ||||

100 |

= Rs. | 8000 x | 21 | x | 21 | ||

20 | 20 |

= Rs. 8820.