Question
Car A leaves a certain point traveling at an average speed of 40 mph. 3 hours later, car B leaves the same point traveling at an average speed of 55 mph. How soon will B catch up to A?
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Answers
Henry
40t = 55(t-3)
40t = 55t-165
55t-40t = 165
15t = 165
t = 11 h.
40t = 55t-165
55t-40t = 165
15t = 165
t = 11 h.