Question

how much time will it take for an amount of rupees 900 to yield rupees 81 as interest at 4:00 per annum of simple interest.​

Answer 1

$\huge{\fcolorbox{white}{pink}{Question:}}$

How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 45% per annum of simple interest?

$\huge{\fcolorbox{white}{pink}{Answer:}}$

$\bf\red{Given-}$

Principal(P)=Rs.900

Simple Interest(S.I.)=Rs.81

Rate=45%

$\sf\pink{Find~Time = ?}$

$\sf\blue{Formula~to~Use-}$

S.I.=$\huge\frac{P×R×T}{100}$

T=$\huge\frac{S.I.×100}{P×R}$

$\sf\orange{Explanation-}$

T=$\huge\frac{S.I×100}{P×R}$

T=$\huge\frac{81×100}{900×45}$

$\bf\pink{T=0.2year}$

$\therefore\huge\bf\blue{Time = 0.2year}$