Question 1157943


A private jet flies the same distance in 15 hours that a commercial jet flies in 10 hours. If the speed of the commercial jet was 98mph less than 2 times the speed of the private jet, find the speed of each jet. 

the speed of the private jet be x mph
the speed of commercial jet = 2x-98
Distance same=y
y/x=15
y=15x

y/(2x-98)=10 
15x/(2x-98)=10

15x = 10(2x-98)

15x = 20x -980

5x=980

x= 196 speed of private jet

speed of commercial jet = 2x-98 
2*196-98

392-98= 294 mph speed of commercial jet

CHECK

196*15=2940
294*10 = 2940