Question

How long will it take a sum of $450 to yield a simple interest of $81 at the rate of 4.5% per annum?

Answer 1

Answer: 4 Years

Explanation:

t=(100*81)/(450*4.5)

t=(2*9)/4.5

t=18/4.5

y=1800/450=4 years.

So, lets dived them as 1800/450 = 4 years.

Bcoz if you want to convert decimal into number just put that much zeros same as above number here in 4.5 we convert it into 450 so just put two zeros above also bcoz from fraction point we increase 2 no. so 2 zeros are der.

Answer 2

We know, $I=\frac{PrT}{100}$

Given, $P=\ 450$

$I=\ 81$

$r=4.5\%p.a.$

$\therefore T=\frac{100I}{Pr}=\frac{100\times 81}{450\times 4.5}=4$ years

#SPJ2