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There are a total of 63 bikes. If the ratio of blue bikes to black bikes is 4 to 5, how many of the bikes are blue?
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There are a total of 63 bikes. If the ratio of blue bikes to black bikes is 4 to 5, how many of the bikes are blue?

User ZeroUnderscoreOu
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4:5 (blue to black), 63 in total

9 represents the total as 4 + 5 = 9

4/9 are blue

5/9 are black

4/9 = 28/63

28 of the 63 bikes are blue.
User Zachary Kniebel
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