Question

By selling a pen for rs 165 sudha gains 10%. If she had sold the pen for rs 157.5, what would be the gain or loss percent

Answer 1

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua}{Hey Mate!!!}}}$

$<b><i><font face=Copper black size=4 color=blue>$ Here is your answer.
SP = Rs 165
Gain % = 10%

CP = SP × 100/(100- GAIN%)
$= \frac{165 \times 100}{(100 + 10)} \\ = \frac{16500}{110} \\ = 150$
Now if
SP = Rs 157.50

Gain = 157.50 - 150
= 7.50
Gain% =
$= \frac{7.50 \times 100}{150} \\ = 5\%$
Therefore Gain % = 5%

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