Question

Find the amount and the compound interest on R20,000 for 1/1/2years at the rate of 8% pa. compounded half yearly​

Answer 1

p= 20000

r=8% p.a. = 8%/2 for half year = .04

n = 1½ years = 3 half years

A = p(1+r)ⁿ

= 20000(1+.04)³ = 22497.28/-

Answer 2

Answer:

Principal(P)=Rs. 20000

Time(t) = 112 years= 32 years

Rate(r) =10%

Amount= P×(1+r2×100)n×2

=Rs.20000×(1+10200)32×2

=Rs.20000×(210200)3

=Rs.20000×2120×2120×2120

=Rs.23152.50

C.I.= Amount-Principal

= Rs. 23152.50-Rs. 20000=Rs. 3152.50