Question 806421
Bus-----------x miles------------ 40 mph
time by bus = x/40

Train--------(450-x) miles--------95 mph
time by train =(450-x)/95

Total time = 8.5 hours

Time by bus + time by train = 8 .5 hours


x/40 + (450-x)/95 = 8.5
multiply equation by 40*95

95x+40(450-x)=8.5*40*95

95x+18000-40x=8.5*40*95
55x=32300-18000

55x=14300
x=18.260 miles  time on bus

Time on train = 450-260=190 miles

time on train = 190/95
2 hours