Question

On selling $17$ cups at Rs. $800$, there is a loss equal to the cost price of 1 cup. The cost price of a cup is?

• A. Rs. $45$
• B. Rs. $50$
• C. Rs. $55$
• D. Rs. $60$

Answer 1

The correct option is B Rs. $50$

Let the $CP$ of a cup be Rs. $x$.

$CP$ of a $17$ cup$=17x$

$SP$=Rs.$800$

Loss$=$CP of $1$ cup$=R\times x$

$17x-800=x$

$⟹16x=800$

$⟹x=$Rs$\frac{800}{16}=$Rs$50$