234$ f or 18 h o u rs 91$ f or x h o u rs R a t i o : 234 − 18 91 − x C ross m u lt i pl i c a t i o n 234 x = 18 ∗ 91 234 x = 1638 ∣ d i v i d e b y 234 x = 7 T o mak e 91$ h e w or k s 7 h o u rs .
Josh needs to work 7 hours to earn $91 based on his current hourly rate of $13 per hour. This was calculated by first finding his hourly rate from a previous total of $234 for 18 hours of work. Then, using that rate, we set up a proportion to determine the number of hours needed to earn $91.
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