Question

cost of 10 articles is equal to the selling price of 8 find profit or loss percent

Answer 1

cost price of 10 articles=selling price of 8 articles
As the no. of selling articles is less than the no. of cost articles.
Therefore,there will be profit.
Now, profit (%)={difference between selling articles and cost articles}×100%/no.of selling articles
={10-8}×100%/8
=25%[Ans.]

Answer 2

Cost price of 1 article = P
Selling price of 1 article = SP

Cost of 10 articles = 10 P = 8 * SP
SP = 1.25 P

Profit = SP - P = 0.25 P
Profit % = 0.25 P / P * 100 = 25 %