SOLUTION: Sally left the house to go to the airport at 6 am and was going 40mph. Chris left the house at 7 am and was going 60mph. If they arrived at the airport at the same time, how many m

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Question 1036847: Sally left the house to go to the airport at 6 am and was going 40mph. Chris left the house at 7 am and was going 60mph. If they arrived at the airport at the same time, how many miles is the airport in relation to the starting point( the house)?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
40 mph * x hours=60 mph * (x-1) hours
40x=60x-60
-20x=-60
x=3 hours
Airport is 120 miles away.