A straight$-$frame wheeled loader with a $2\mathrm{.}7-$cubic$-$yard bucket $($rated heaped capacitying a basement that measures $30$ feet by $65$ feet with an average depth of $10$ feet. The material ismoist loam weighing $2,800$ pounds per bank cubic yard with a percent swell of $25\%.$ The soil isto be stockpiled an average of $175$ feet away from the middle of the basement. The static tippingloader is $19,500$ pounds. It is estimated that the average travel speed is $1\mathrm{.}7$ milhour. Using a $50-$minute working hour, estimate the total time required for the loader to com$-$plete the excavation.