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Answer:
28 million college students.
Step-by-step explanation:
We can represent all college students as x. This means that all part-time college students are [tex]\frac{31}{100}x[/tex]. Because all part-time college students are also equal to 8.6 million, we have [tex]8,600,000=\frac{31}{100}x[/tex]. To find the number of total college students, or x, we have to multiply by 100/31 to get rid of the fraction on the other side:
[tex]8,600,00\cdot\frac{100}{31}=x[/tex]
The left side of the equation evaluates as [tex]27,741,935.5[/tex]. Because we are asked to round to the nearest million, we have to round to 28 million, which is the closest.