If the cost price of 12 pens is equal to sell | vedclass

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Question

Let $C.P.$ of $1$ pen be $Rs. x$

$C.P.$ of $12$ pens $=$ $S.P.$ of $8$ pens $=Rs. 12 x$

Profit $= S.P.$ of $4$ pens

$=$ $C.P.$ of $6$ pens $=

Vedclass · Accepted Answer

$50$

Vedclass · Answer

Let $C.P.$ of $1$ pen be $Rs. x$

$C.P.$ of $12$ pens $=$ $S.P.$ of $8$ pens $=Rs. 12 x$

Profit $= S.P.$ of $4$ pens

$=$ $C.P.$ of $6$ pens $=Rs. 6 x$

$\operatorname{gain} \%=\frac{	ext { C.P. of } 6 	ext { pens }}{	ext { C.P. of } 12 	ext { pens }} 	imes 100$

$=\frac{6 x}{12 x} 	imes 100=50 \%$

If the cost price of $12$ pens is equal to selling price of $8$ pens, find the gain percent.

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