Question : If the cost price and selling price of an article are in the ratio 10 : 11, then the percentage of profit is:

Option 1: 10%

Option 2: 9%

Option 3:

3%

Option 4: 1%

Question : If the ratio of the cost price to the selling price of an article is 4 : 5, the percentage of profit will be:

Option 1: 20

Option 2: 0.1

Option 3: 10

Option 4: 25

Question : In a medical transaction, 17 times the cost price is equal to 8 times the sum of the cost price and the selling price. What is the gain or loss percentage?

Option 1: Loss 15%

Option 2: Gain 17.5%

Option 3: Gain 12.5%

Option 4: Loss 30%

Question : If the cost of 20 books is equal to the selling price of 18 books, then the gain percentage is:

Option 1: $11 \frac{1}{9}$%

Option 2: $11 \frac{1}{3}$%

Option 3: $11 \frac{2}{9}$%

Option 4: $10 \frac{1}{9}$%

Question : If a 10% loss is made on the selling price, the percentage of loss on the cost price will be:

Option 1: $11\frac{1}{9}\%$

Option 2: $9\frac{1}{11}\%$

Option 3: $10\%$

Option 4: $11\%$