If a box contains 10 red balls and 5 blue balls, what is the ratio of red balls

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Question: If a box contains 10 red balls and 5 blue balls, what is the ratio of red balls to total balls?

Options:

Correct Answer: 2:1

Solution:

The total number of balls is 10 + 5 = 15. The ratio of red balls to total balls is 10:15, which simplifies to 2:3.

If a box contains 10 red balls and 5 blue balls, what is the ratio of red balls to total balls?

If a box contains 10 red balls and 5 blue balls, what is the ratio of red balls to total balls?

Step 1: Count the number of red balls. There are 10 red balls.
Step 2: Count the number of blue balls. There are 5 blue balls.
Step 3: Add the number of red balls and blue balls together to find the total number of balls. 10 red + 5 blue = 15 total balls.
Step 4: Write the ratio of red balls to total balls. The ratio is 10 (red balls) to 15 (total balls), which is written as 10:15.
Step 5: Simplify the ratio 10:15. Both numbers can be divided by 5. 10 ÷ 5 = 2 and 15 ÷ 5 = 3.
Step 6: The simplified ratio of red balls to total balls is 2:3.

Ratio – Understanding how to express the relationship between two quantities.
Simplification – The process of reducing a ratio to its simplest form.
Addition – Calculating the total number of items by adding quantities.