The Caterpillar D6R Series 3 and D8R tractors are rated, respectively, at flywheel horsepowers (fwhp) 0f 185 and 305. The “A,” “S,” and “SU” blade widths (length) for the D6R are S, 16 ft, 9 in.; A, 17 ft, 1 in.; and for the
D8R SU-21 ft, A, 21 ft, 7 in. Calculate the hp per foot of cutting edge ratio for all four conditions.