Bob drove from home to work at 80mph, after work the traffic was heavier, and he drove home at 25 mph. his driving time to and from work was 1 hour and 3 minutes. how far does he live from his job
To work DATA: rate = 80 mph ; distance = x miles ; time = d/r = x/80 hrs To home DATA: rate = 25 mph ; distance = x miles ; time = x/25 hrs Equation: time(to work) + time(to home) = time (total) x/80 + x/25 = 63/60 60*25x + 60*80x = 63*80*25 1500x + 4800x = 126000 63000x = 126000 x = 126/63 x = 2 miles
