Jacob had math homework on 81 evenings.
Step-by-step explanation:
Time spent of each evening = 1/3 of an hour
Time spent in minutes = [tex]\frac{1}{3}*60 = 20\ minutes[/tex]
Total time spent = 27 hours
Total time spent in minutes = 27*60 = 1620 minutes
Let,
x be the number of evenings spent doing math homework.
Time spent each day* Number of evenings = Total time spent
[tex]20x=1620[/tex]
Dividing both sides by 20
[tex]\frac{20x}{20}=\frac{1620}{20}\\x=81[/tex]
Jacob had math homework on 81 evenings.
Keywords: multiplication, division
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