Question 202767
"Hillary's Lexus travels 30 mph faster than Bill's Harley" ___ HL = BH +30


time = distance / rate


"In the same time that Bill travels 75 mi, Hillary travels 120 mi" ___ 75 / BH = 120 / HL


"cross" multiplying ___ 75 HL = 120 BH


substituting ___ 75 (BH + 30) = 120 BH ___ 75 BH + 2250 = 120 BH ___ 2250 = 45 BH ___ 50 = BH


substituting ___ HL = 50 + 30 ___ HL = 80