A CAT $637G$ wheel$-$tractor scraper full loaded is operating up a $6\%$ grade. The rolling resistance of the haul road is $120lbs$ per ton. Compute the haul speed of the scraper. What gear is the scraper in when operating under the fully loaded condition? Compute the return speed of the scraper. What gear is the scraper in when returning to the cut location? Use the attached $637G$ RimpullSpeed$-$Gradeability chart.

$\backslash$table$[[$Wheel Tractor$-$Scrapers, $637G$ Rimpull$-$Speed$-$Gradeability

$*37\mathrm{.}25R35$Tires