SOLUTION: Chang and his brother, Min, use different cell phone plans from the Global Connection phone company. In one month, the two brothers use a total 500 minutes. Chang pays $0.20 per mi

Question 1095630: Chang and his brother, Min, use different cell phone plans from the Global Connection phone company. In one month, the two brothers use a total 500 minutes. Chang pays $0.20 per minute used and Min pays $0.25 per minute used. If their total bills adds up to $111, how many minutes did each brother use for the month?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Chang uses x minutes
Min uses 500-x
Chang 0.20*x
Min (500-x)(0.25)
0.20x+125-0.25x=111
-0.05x=-14
x=280 minutes for Chang or $56.
500-x=220 minutes for Min or $55
Adds to $111.
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