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creativ13 [48]
3 years ago
7

Trevor tutors French for $15 and hour and scoops ice cream for $10 an hour. He is going to work 15 hours this week. How many hou

rs does Trevor need to tutor to make at least $180? a0 hours
Mathematics
1 answer:
VladimirAG [237]3 years ago
6 0
Total number of hours = 15
Let the hours spent tutoring french be x.
Therefore hours spent on scooping ice cream = (15 - x)
Amount:    Tutoring french is $15 an hour, total for x hours = 15x
For scooping ice cream  it is $10 an hour   10*(15 - x) = 150 - 10x 
To make more than $180
15x  + (150 - 10x)  > 180
15x + 150 - 10x > 180
15x - 10x > 180 - 150
5x > 30
x > 30/5
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