Manuel traveled 6 hours nonstop to Mexico, a total of 278 miles. He took a train part of the way, which averaged 50mph, and then took a bus the remaining distance, which averaged 30mph. How long was Manuel on the train?
Train x miles --------- 70 mph Bus 293-x miles---------40 mph time train + time bus = 5 t=d/r x/70 + (293-x)/40 = 5 Multiply by LCD 2800 40x+70(293-x)= 5 * 2800 -30x+20510=14000 -30x=-6510 x=-6510/-30 x=217----------- train distance balance bus distance
