Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.
Let the cost price of 1 pen is Rs. 1
Cost of 8 pens = Rs. 8
Selling price of 8 pens = 12
Gain = 12 - 8 = 4
Gain% = Gain Cost × 100 % = 4 8 × 100 % = 50%