Question

a trader marks his goods 40 ℅ above the cost price. he sells them at a discount of 20℅. what is his loss or gain percentage.

Answer 1

If the cost price is RS 100 he marks his goods RS 140
20% discount means,
if CP is rs 100 then the SP is rs 80
now the CP is rs 140 so SP is rs = 80/100×140
= RS 112
his gain is SP - CP = 112 -100 = 12 %

Answer 2

Given :

A trader marks his goods 40 ℅ above the cost price. he sells them at a discount of 20℅.

To find:

Gain or Loss percentage

Solution :

Let the cost price is 100

Finding Marked price -

40% of 100 + 100

= 40 + 100

= 140

Marked Price = 140.  

Finding discount -

Discount on Marked Price.  

Discount % = 20 % (Given)

Discount = 140 x 20/100 = 28

Finding Selling Price -

Selling Price = Marked Price - Discount

Selling Price = 140 - 28

Selling Price = 112.

Finding  Gain -

Gain = Selling Price - Cost Price

Gain = 112 - 100

Gain = 12

Finding Gain Percentage -

Gain % = Gain/Cp x 100

Gain % = 12/100 x 100

Gain % = 12 %.

Hence, Gain Percentage = 12%