Question

person takes a trip, driving with a constant speed of 93.5 km/h, except for a 24.0-min rest stop. the person's average speed is 62.4 km/h. (a) how much time is spent on the trip? h (b) how far does the person travel?

Answer 1

Step-by-step explanation:

rate X time = distance

93.5 km/h * t = d (First equation)

distance / rate = time

d/62.4 = t + 24/60 re-arrange to t = d/62.4 - 24/60

sub into First equation

93.5 * (d/62.4 - 24/60) = d <====solve for 'd'

1.49839d - 37.4 = d

d = 75 km

then time = distance / rate = 75/62.4 = 1.2 hr