The ratio of red paint to blue paint in a shade of purple paint is 5 : 7.Calculate the percentage of the purple paint that is red.Give your answer correct to one decimal place.
Question
The ratio of red paint to blue paint in a shade of purple paint is 5 : 7.Calculate the percentage of the purple paint that is red.Give your answer correct to one decimal place.
Solution
To calculate the percentage of the red paint in the purple paint, follow these steps:
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First, add the two parts of the ratio together. This gives you the total parts. In this case, 5 (for red) + 7 (for blue) = 12 total parts.
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Next, divide the number of red parts by the total number of parts. So, 5 (red) ÷ 12 (total) = 0.4167.
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Finally, to convert this to a percentage, multiply by 100. So, 0.4167 x 100 = 41.67%.
Therefore, the percentage of the purple paint that is red is approximately 41.7% (correct to one decimal place).
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