34 years
37 years
45 years
47 years
C. 45 years
P(1+R/100)15=2P
(1+R/100)15=2P/P=2
LET P(1+R/100)n=8P
(1+R/100)n=8=23={(1+R/100)15}3[USING (I)]
(1+R/100)N=(1+R/100)45
n=45.
Thus, the required time=45 years.
3109
3210
3901
1309
1 year
4 year
3 year
6 year
512
612
712
812
1261
1234
1256
1287
10%
12%
13%
15%
Find the compound interest on Rs. 10,000 in 2 years at 4% per annum, the interest being cmpounded half-yearly.
823
824.32
798.67
800
A sum of money amounts to rs.6690 after 3 years and to rs.10,035 after 6 years on compound interest. Find the sum.
3467
4560
4460
7890
5400
6400
7400
8767
If Rs. 500 amounts to Rs. 583.20 in two years compounded annually, find the rate of interest per annum.
7%p.a
8%p.a
9%p.a
10%p.a
The difference between the compound interest and simple interest on a certain sum at 10% per annum for 2 years is Rs. 631. Find the sum.
53,100
52,900
63,100
64,500
If the compound interest on a certain sum at 16 (2/3)% to 3 years is Rs.1270, find the simple interest on the same sum at the same rate and f or the same period.
1080
1089
2345
1908
Find the compound interest on Rs. 16,000 at 20% per annum for 9 months, Compounded quarterly.
2344
2455
3244
2522
34 years
37 years
45 years
47 years