Problema Solution
A private jet flies the same distance in 9 hours that a commercial jet flies in 8 hours. If the speed of the commercial jet was 175 mph less that 2 times the speed of the private jet, find the speed of each jet
Answer provided by our tutors
Let
v = the speed of the private jet, v>0
2v - 175 = the speed of the commercial jet, 2v - 175>0
Since distance = speed*time we have:
9*v = 8*(2v - 175)
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v = 200 mph
2v - 175 = 2*200 - 175 = 225 mph
The speed of the private yet is 200 mph.
The speed of the commercial jet is 225 mph.