Question

simple interest on a sum of money is 9/16 of the sum.if the rate is 4 whole 1/2%per anum,find the time

Answer 1

$\frac{9}{16} p = \frac{prt}{100}$

r = $4 \frac{1}{2} = 4.5$

$\frac{9}{16} p = \frac{p \times 4.5 \times t }{100}$

$t = 12.5 \: years= 12 \frac{1}{2} \: \: years = 12 \: years \: 6 \: months$