SOLUTION: joe leaves on a car trip,driving a steady 45 mph. He expects the trip to take exactly 3 hours. After he has been driving for an hour, he realizes he has forgotten an appointment, a
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-> SOLUTION: joe leaves on a car trip,driving a steady 45 mph. He expects the trip to take exactly 3 hours. After he has been driving for an hour, he realizes he has forgotten an appointment, a
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Question 967009: joe leaves on a car trip,driving a steady 45 mph. He expects the trip to take exactly 3 hours. After he has been driving for an hour, he realizes he has forgotten an appointment, and he needs to arrive a half hour earlier than planned. How many miles per hour will he need to drive for the rest of the trip to make his goal? Answer by KMST(5328) (Show Source):
You can put this solution on YOUR website! Joe expected the trip to take exactly hours, driving at miles per hour. That was his plan.
That means that the distance he was planning to drive is miles.
After he has been driving for an hour, Joe had covered miles, and still had another miles to go.
At that point, Joe realizes he needs to arrive a half hour earlier than planned.
That means that he must complete the trip in a total of hours.
Since he has already been driving for hour,
the time remaining for the trip is hour.
Joe must cover the remaining miles in hour.
He will have to drive at miles per hour for the rest of the trip to make his goal.
