Question

You are driving home from school steadily at 92 km/h for 190 km . It then begins to rain and you slow to 63 km/h instantly. You arrive home after driving 4.5 hours. How far is your hometown from school? What was your average speed?

Answer 1

Answer:

343.4 km

Explanation:

For the first half when he was driving at 92 km/h,

Speed = distance / time

92 = 190 / t1

t1 = 190/92

t1 = 2.065 h

For the second half when he was driving at 63 km/h,

Speed = distance / time

63 = d / (4.5 - t1)

63 = d / (4.5 - 2.065)

d = 63 x 2.435

d = 153.39 km

So the total distance from his school to hometown is,

190 + 153.39 = 343.39 km

Answer 2

Answer:

343.4 km

Explanation:

it very easy to do see how

he is also correct