a painter rented a wallpaper steamer at 9a.m and returned it at 4p.m. he paid a total of 28.84.
what was the rental cost.?
I think they are asking rental cost per hour .
9-10 ,10-11, 11-12, 12-1, 1-2, 2-3, 3-4 .
Totally 7 hours .
Therefore he paid 28.84$ for 7 hours .
So cost per hour = 28.84/7 = 4.12$ per hour
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