heemythecreator heemythecreator
  • 12-11-2018
  • Mathematics
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A person is working at a constant rate. If he produces 15 details in 8 hours, how long does he need to work to produce 18 details? Please write an equation!

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altavistard
altavistard altavistard
  • 12-11-2018

Write and solve an equation of ratios:

15 details      8 hr

--------------- = -------

18 details        x

Cross multiplying, 15x = 144.  Therefore, x = 144/15 = 9.6 hours

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