Tushar sold 150 chairs and had a gain equal to the selling price of 50 chairs. What is his profit percentage?

Correct option is B

​Given:
​​Number of chairs sold = 150
​​Gain = Selling Price of 50 chairs
​​Formula Used:
​​​$$\text{Profit Percentage} = \left( \frac{\text{Profit}}{\text{Cost Price}} \right) \times 100$$​​​​
​​Solution:
​​Let the Selling Price (SP) of 1 chair be ₹1
​​Total SP of 150 chairs = ₹150
​​Gain = SP of 50 chairs = ₹50
​​So, Cost Price (CP) = SP – Gain = 150 – 50 = ₹100
​​Profit Percentage = $$\left( \frac{50}{100} \right) \times 100 = 50\%$$