9514 1404 393
Answer:
10.8 hours
Step-by-step explanation:
Mr. Chandler has a head start of ...
(4.5 h)(60 mi/h) = 270 mi
Mrs. Chandler is closing the gap at the rate of ...
(85 mph) -(60 mph) = 25 mph
At that rate, she will close the 270 mile gap in ...
(270 mi)/(25 mi/h) = 10.8 h
It will take Mrs. Chandler 10.8 hours to catch up.
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After 15.3 hours, Mr. Chandler will have driven 918 miles.
After 10.8 hours, Mrs. Chandler will have driven 918 miles.
