Question

What sum will become Rs.19683 in 18 months if the rate of interest is 2×1/2 per annum and the interest is compounded half yearly???
(a) Rs. 17962.12
(b) Rs. 18962.96
(c) Rs. 17981
(d) Rs. 16712.80​

Answer 1

Answer:

b)₹18962.96

Step-by-step explanation:

principal=x

rate=2×1/2%per annum

5/(2×2)=5/4

time=18months

18/6=3half year

amount=₹19683

A=P[1+r/100]^n

19683=x(1+5/400)^3

x=19683×80×80×80

81×81×81

x=10077686000

531441

x=18962.96

x=