7 out of every 30 students ride their bikes to school. There are 720 students. How many ride their b

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7 out of every 30 students ride their bikes to school. There are 720 students. How many ride their bikes

Set up a proportion of students who ride their bike to total students where r is the number of students who ride their bikes:
7/30 = r/720

To solve this proportion for r, we type it in our calculation engine and we get:
r = 168