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# Comp Interest

### Compound Interest

At what rate a sum of R1800 will become R2700 in 10 years ? 5%
A sum of R1600 lent at 12.5% will become twice in how many years ? 8 years
John took a loan for 6 years at 5% .If the total interest paid was R1230, the principal was ? R4100
If R1200 amounts to R1440 in 5 years find the rate of interest 4%
If a sum of R1600 gives a simple interest of R252 in two years and 3 months , then the rate is ? 7%
In what time will Rs. 72 become Rs.81 at 6 1/4 % ? 2 years
A sum of money doubles itself in 5 1/2 years ,in what time will it triple itself ? 11 years
At what rate a sum will double itself in 16 years ? 6 1/4 %
On retirement a person gets R153 000 which he invests in a scheme at 20% p.a. ,find his monthly income. R2550
Find the sum required to earn a monthly income of R600 at 6% p.a. R120 000
A sum of money amounts to R2520 in 2 years and R2700 in 5 years , find the rate 2 1/2%
A sum of money doubles itself in 7 years , in how many years it becomes four fold ? 21 years
John lent R8000 to his friend for 3 years at 5% p.a. c.i. ,what amount will John get after 3 years ? R9261
Compute the c.I. on R4000 for 1 1/2 years at 10% p.a. compounded half yearly. R630.50
A sum becomes R1352 in 2 years at 4% C.I. Find the sum. R1250
Find the C.I. that A man will get by investing R3000 for 2 years at 5% p.a. R307.50
Find the C.I. on R400 for 9 months at 6% p.a. compounded quarterly R18.27
In what time will R800 amount to R882 at 5% C.I. ? 2 years
What sum of money lent out at C.I. will amount to R968 in 2 years at 10% p.a. ? R800
Find the difference between S.I. and C.I. on R31250 in 2 years at 4% p.a. R50
At what rate (C.I.)will R1000 amount to R1313 in 3 years? 10%
A sum of money at C.I. amounts to thrice itself in 3 years . In how many years will it be 9 times of itself ? 6 years
In how many years will a sum of R800 amounts to R926.10 at 10% p.a. compounded half yearly ? 1 1/2 years
The C.I.on a certain sum for 2 years at 10% p.a. is R420 . Find the S.I. at the same rate for same time R400