Math
posted by Anonymous .
Two families met at a par for a picnic at the end of the day, they part ways. Family A leaves 15 minutes after Family B and travels east at an average of 42 mph; while family B travels west at an average of 50mph. Both families have an approximately 160 miles to travel.
1.)find the time(in hours and minutes) that it takes them to be 120 miles apart
2.) when family B arrives at home how much further does Family A still have to travel?
I belive the answer to part 1 is 8 hours and 9 minutes but i have no idea for the second on how to set up the equation. For the first part i made a table with R,T,D and for the second one i also made a table with R,T,D

I just need to know the equation for Part 2 in order to solve the problem
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