3. Problem Solving

Ratios Proportions — Quiz

Test your understanding of ratios proportions with 5 practice questions.

Practice Questions

Question 1

A mixture of paint contains red and blue paint in a ratio of $5:3$. If there are $24 liters of blue paint, what is the total volume of the mixture?

Question 2

The ratio of the number of fiction books to non-fiction books in a library is $7:4$. If there are $330 books in total, how many non-fiction books are there?

Question 3

A company's revenue increased from $400,000$ to $480,000$ in a year. What is the percentage increase in revenue?

Question 4

If $y$ is directly proportional to the square of $x$, and $y = 75$ when $x = 5$, what is the value of $y$ when $x = 3$?

Question 5

A scale model of a car has a length of $15$ cm. If the actual length of the car is $4.5$ meters, what is the scale of the model?