MCQ 11 Mark
If the cost price of $15$ pens is equal to the selling price of $20$ pens, then the loss percent is
- ✓$25\%$
- B$20\%$
- C$15\%$
- D$18\%$
Answer
View full question & answer→Correct option: A.
$25\%$
Let the cost price of one pen be $₹1.$
Then, $CP$ of $20$ pens $= Rs. 20$
and $SP$ of $20$ pens $= Rs. 15 ( \because SP$ of $20$ pens $= CP$ of $15$ pens$)$
Therfore, $CP$ is more than $SP.$
So, Loss $= CP - SP$
$= Rs. 20 - Rs. 15$
$= Rs. 5$
Loss $\% =\frac{\text{Loss}}{\text{CP}}\times100$
$=\frac{5}{20}\times100$
$=25\%$
Hence, the correct option is $(a).$
Then, $CP$ of $20$ pens $= Rs. 20$
and $SP$ of $20$ pens $= Rs. 15 ( \because SP$ of $20$ pens $= CP$ of $15$ pens$)$
Therfore, $CP$ is more than $SP.$
So, Loss $= CP - SP$
$= Rs. 20 - Rs. 15$
$= Rs. 5$
Loss $\% =\frac{\text{Loss}}{\text{CP}}\times100$
$=\frac{5}{20}\times100$
$=25\%$
Hence, the correct option is $(a).$