SOLUTION: A small airplane flies 1120 miles with an average speed of 280 miles per hour. 2 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at th
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Question 921605: A small airplane flies 1120 miles with an average speed of 280 miles per hour. 2 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time; what was the average speed of the 747 ?
You can put this solution on YOUR website! _____________________rates___________time_________distance
SMALL________________280_____________t+2__________1120______
747___________________r_______________t___________1120______
Two equations in the two unknowns r and t.
Solve the system for r.
You can put this solution on YOUR website!
A small airplane flies 1120 miles with an average speed of 280 miles per hour. 2 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time; what was the average speed of the 747 ?
Time small airplane traveled for: , or 4 hours
Boeing 747 takes 2 hours less, or 4 – 2, or 2 hours
Speed of 747: , or mph
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