SOLUTION: A woman is taking her kids to see her sister. To save gas, the sister plans to meet them on the way. The whole journey is 450 miles long. The woman with the kids follows the rules

Question 865189: A woman is taking her kids to see her sister. To save gas, the sister plans to meet them on the way. The whole journey is 450 miles long. The woman with the kids follows the rules and drives 70 mph. The sister is not careful and drives 80 mph. How long will it take for them to meet each other if they left at the same time?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Speeds are added when going in opposite directions.
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d = r*t
t = d/r

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