Bihar Police Constable Model Paper 7

Given:
A person bought 10 toys for Rs 40 and sold 8 toys for Rs 48
Formula Used:
profit% = (selling price - cost price)/cost price × 100
Calculation:
⇒ cost price of a toy = 40/10 = Rs. 4
⇒ selling price of a toy = 48/8 = Rs. 6
⇒ profit% = (6 - 4)/4 × 100 = 50%
∴ required profit% = 50%