If the selling price of a product is multiplied by 2, then the resultant profit is 6 times the original profit. What is the original profit percentage?

25

Let the CP and SP of the article be Rs. x and Rs. y respectively, then

2y - x = 6 (y - x)

2y - x = 6y - 6x

6x - x = 6y - 2y

5x = 4y

x : y = 4 : 5

Now, we can say

CP of the article = Rs. 4

SP of the article = Rs. 5

Profit = 5 - 4 = 1

Profit percentage = \(\frac{1}{4}\) × 100 = 25%