Question

what sum of money amount to 2020rs in 3 months at 5% si per annum ?

Answer 1

P(1+r/100)t

2020(100+5/100)³

2020(1.05)³

2020×1.157625

2315.25 ans..

please mark me as brainlist answer

Answer 2

GIVEN:-

$\sf\green{Amount=Rs .2020}$

$\sf\red{Time=3 months= \frac{1}{4} \: year }$

$\sf\blue{Rate=5 \: percent}$

TO FIND:-

$principal \: amount$

$\huge\color{cyan}\boxed{\colorbox{green}{SOLUTION}}</p><p>$

$\bf Interest=Rs \: 2020-P$

$\bf 2020-P = \frac{p \times r \times t}{100}$

$\bf 2020-P = \frac{p \times 5 \times \frac{1}{4} }{100}$

$\bf 2020-P = \frac{0.25 \times 5}{100}$

$\bf 2020 = \frac{1.25}{100 + p}$

$\bf 2020 = \frac{1.25}{100}$

$</p><p></p><p>\bf By \: Cross \: Multiplying$

$\bf 125p = 2020 \times 100$

$\bf 125p = 202000$

$\bf p = \frac{202000}{125} = 1616$

$\bf \color{green}The \:amount \: of \: principal \: is \\ = 1,616$