Question
Write $‘T’$ for true and $‘F’$ for false for the following:
A sum doubles itself at simple interest at $10\%$ per annum in $10$ years.
A sum doubles itself at simple interest at $10\%$ per annum in $10$ years.
✓
Answer
True.
Let the sum be $Rs. x$
$\text{S.I.}=\frac{\text{P}\times\text{R}\times\text{T}}{100}$
$\text{S.I.}=\frac{\text{x}\times10\times10}{100}$
$\text{S.I.}=\text{Rs. x}$
Amount $= S.I. + P$
$= x + x$
$= Rs. 2x$
Let the sum be $Rs. x$
$\text{S.I.}=\frac{\text{P}\times\text{R}\times\text{T}}{100}$
$\text{S.I.}=\frac{\text{x}\times10\times10}{100}$
$\text{S.I.}=\text{Rs. x}$
Amount $= S.I. + P$
$= x + x$
$= Rs. 2x$
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