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saul85 [17]
2 years ago
14

Ken calculates that he spends 15% of a school day in science class. If he spends 75 minutes in science class, how

Mathematics
1 answer:
yulyashka [42]2 years ago
3 0

Answer:

500 minutes

Step-by-step explanation:

Let x be the time Ken spends in school.  [I'll note that x < infinity, a common misperception.]

Kevin spends 15% of his school time in science class.  That would be expressed as 0.15x.

We learn that Science class lasts 15 minutes, so we can write:

   0.15x = 75 minutes

          x = (75 minutes)/0.15

          x = 500 minutes is the time Kevin spends in school

=================

(500 minutes)*(1 hr/60 minutes) = 8 1/3 hours

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