SOLUTION: Two planes left St. Louis for Los Angeles at the same time. After 4 hours they were 700 mi apart. The slower plane traveled at 350 mi/h. What was the speed of the faster plane?

Question 908881: Two planes left St. Louis for Los Angeles at the same time. After 4 hours they were 700 mi apart. The slower plane traveled at 350 mi/h. What was the speed of the faster plane?

Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
If they are 700 miles apart after 4 hours, the faster plane is traveling miles faster, or 175 miles faster.
Since the slower plane is traveling at 350 mph, the faster plane is traveling at 525 mph.
4 hours at 350mph = 1400
4 hours at 525 mph = 2100
2100-1400=700
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