A person marks his goods x% above the cost price and allows a discount of 30% on the marked price. If his profit is 5%, then the value of x will be:

Answer: Option A

Solution

Answer: Option A

Solution:

$$30\%\to \frac{-3}{10}$$

$$\begin{array}{rl}& 100+x=150\\ & x=50\end{array}$$