Question

A man drives from ibadan to Oyo, a distance of 48km in 45 minutes. If he drives at 72km/h where the surface is good and 48km/h where it is bad, find the number of kilometres of good surface.

Answer 1

total time = 45 min .75 hour

72 t + 48(.75-t) = 48 etc

Answer 2

thank you, but where do you get 75 hr?

Answer 3

Look carefully, Damon had .75 not 75

45 minutes
= 3/4 hour
= .75 hours