Question 1158413
The car leaving Vernonville averages x mph, and the other car averages (x+10) mph. After 1.6 hours, they meet. The car leaving Vernonville traveled 1.6x miles and the other car traveled 1.6x+16. The sum of these values are 128. {{{1.6x+(1.6x+16)=128}}}. {{{3.2x+16=128}}}. {{{3.2x=112}}}. {{{x=112/3.2=35}}}. {{{x+10=45}}}. The car leaving Vernonville averages 35 mph, and the other car averages 45 mph.