Question

When an article is sold for Rs. 720, there is a profit of x%. When the same article is sold for Rs. 750, profit is (x + 5)%. What is the value of is the value of x?
1. 20
2. 18
3. 25
4. 15

Answer 1

Correct Answer - Option 1 : 20

Given 

Selling price of article at x% profit = Rs 720 

Selling price of article at (x + 5)% profit = Rs 750 

Formula Used 

Profit % = (profit/cp) × 100 

Profit = sp - cp 

Calculation 

⇒ difference in profit = 5% 

⇒ [(750 - cp)/cp] - [(720 - cp)/cp] = 5/100

⇒ 30/cp = 5/100 

⇒ cp = Rs 600 

⇒ x = (720 - 600)/600 × 100 

⇒ x = 20% 

∴ the value of x is 20