Question

the cost price of 15 articles is 300 if the profit percent 25% what is the selling price

Answer 1

Here is your answer
CP = 300
Profit % = 25%

Profit = 25% of 300
$= \frac{25}{100} \times 300 \\ \\ = 75$
so
SP = CP + PROFIT
$= 300 + 75 \\ = 375$
Therefore
Selling Price = 375

Hope it helps you