Question

By selling on book for 250, loss percentage is 10%. What is the cost price?

• A. 277.7
• B. 250
• C. 285
• D. 315

Answer 1

The Correct Option is A

To find the cost price (CP) of the book when sold at ₹250 with a loss of 10%, we start by using the formula for loss percentage:
Loss % = ((CP - SP) / CP) × 100

Here, SP (Selling Price) is ₹250 and Loss % is 10%. Rearrange the formula to find CP:
10 = ((CP - 250) / CP) × 100

Solving for CP, we get:
10/100 = (CP - 250) / CP
0.1 = (CP - 250) / CP

Multiply both sides by CP:
0.1 * CP = CP - 250

Simplify to find CP:
CP - 0.1 * CP = 250
0.9 * CP = 250

Divide both sides by 0.9:
CP = 250 / 0.9
CP = ₹277.77

Therefore, the cost price of the book is ₹277.7.