In order to solve this problem, you must create a ratio. If Bangor is 240 miles away and Javier has only 4 hours to get there, we can divide 240 by 4 which equals 60 miles per hour.
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All of my resources are saying that this has no inverse.
Answer:
Here I think you need to do $15-50%=7.5 and $10-50=5
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