Solve Ratio Problems

A ratio is a relationship between two numbers that shows how many times the first number contains the second.

A ratio can be expressed in three ways: using a colon (e.g., 1:2), as a fraction (e.g., 1/2), or in words (e.g., '1 to 2').

12 dogs (Since 3 cats correspond to 4 dogs, 9 cats correspond to 12 dogs).

A simplified ratio means that the numbers in the ratio have been reduced to their smallest whole number form.

25 oranges (Since 2 apples correspond to 5 oranges, 10 apples correspond to 25 oranges).

Identify the ratio and the total quantity involved in the problem.

3 pencils (1 part pencils + 4 parts erasers = 5 parts total; 15 items ÷ 5 parts = 3 items per part).

Add the parts of the ratio together and multiply by the number of items per part.

A part in a ratio refers to the individual sections of the total that correspond to each item in the ratio.

15 girls (Since 2 boys correspond to 3 girls, 10 boys correspond to 15 girls).