Question

Ere 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?

Answer 1

Answer:

Explanation:

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

R=100*60100*6 =10% p.a

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

C.I=Rs.[12000*[1+10100]3−1]

=Rs.3972

Hope this helps u dude

Answer 2

The amount at the end of 'n' years of investing in compound interest.

$A = P(1 + \frac{r}{100} {)}^{n}$

$here,$

$P = 12000$

$n = 3$

$r = 5\%$

$A = 12000(1 + \frac{5}{100} {)}^{3}$

$= rs.13891.5$

now, compound interest

$CI = amount - principle \\ = 13891.5 - 12000 \\ \boxed{= rs.1891.5}$