Bart’s cell phone package costs $15 a month plus an additional 10 cents per megabyte of data used over his data limit. Ping’s is $10 a month plus 12 cents per megabyte used over her data limit. Determine the data overage when their monthly bills would be the same. Solve with linear system.

Answer 1

15 + 0.10 m = 10 + 0.12 m
0.02 m = 5
m = 5 / 0.02 = 500 / 2 = 250 megabyes