SOLUTION: Mr. Chandler leaves 2.5 hours before Mrs. Chandler. He drives 60mph. She drives 70mph. How long will it take for Mrs. Chandler to overtake Mr. Chandler?

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Question 633955: Mr. Chandler leaves 2.5 hours before Mrs. Chandler. He drives 60mph. She drives 70mph. How long will it take for Mrs. Chandler to overtake Mr. Chandler?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
60*2.5=120+30=150
She is catching up at a rate of 10mph.(70-60)
150/10=15 hours
It will take the Mrs 15 hours to catch up.
If she traveled at 75mph she would need 150/15 =10 hours to catch up.