Question

By selling a transistor for Rs $650$, a shopkeeper earns a profit equivalent to $30$% of the cost price of the transistor. What is the cost price of the transistor?

• A. Rs. $200$
• B. Rs. $300$
• C. Rs. $400$
• D. Rs. $500$

Answer 1

The correct option is D Rs. $500$

$\Rightarrow$ Selling price of transistor is Rs.$650.$

$\Rightarrow$ Profit is $30\%$

$\Rightarrow$ $C.P.=\frac{100}{100+Profit\%}\times S.P.$

$\Rightarrow$ Cost price of transistor = $\frac{100}{100+30}\times 650=$Rs.$500.$