High-Low Method for Service Compsry Miss River Ralload decided to use the high-low method and operabing data from the past six months to estimate the fixed and variable camponents of transportation costs. The activity base used by Miss River Railroad is a measure of railroad operating activity, termed "gross-ton miles," Which is the total number of tons multiplied by the miles moved Determine the variable cost per gross-ton mile and the fixed cost. Round variable cost per unit to the nearest cent. Variable cost per grossiton mile Foned cost