Homework Answers
Solved(option (c) is the correct answer)
Distance(d) = Rate(r) *Time(t) or d=rt; r=d/t and t=d/r
Let t=time to separate by 510mi
By inspection, we can see that Joe and Janna are separating at the
rate of 45+40 or 85 mph. So our equation to solve is:
510=85t divide each side by t
t=6 hours-------time it takes for them to separate by 510 miles
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