SOLUTION: A modern jet plane can go 400 mph more than twice as fast as a diesel powered train. IF the train can run 165 mi. in the same time that the plane can fly 1210mi., find the rate of

Question 904823: A modern jet plane can go 400 mph more than twice as fast as a diesel powered train. IF the train can run 165 mi. in the same time that the plane can fly 1210mi., find the rate of each?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Times are equal
Apply conditions and equate
diesel powered train speed = x
A modern jet plane can go 400 mph more than twice as fast as a diesel powered train.
speed = 2x+400
d/r train = d/r plane
165/x = 1210/(2x+400)
165(2x+400)=1210x
330x+66000=1210x
880x=66000
/880
x= 75 mph speed of train
speed of plane = (2x+4)
2*75+400
=150+400
550 mph
IF the train can run 165 mi. in the same time that the plane can fly 1210mi., find the rate of each?
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