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.

Question

Damon · Accepted Answer

total time = 45 min .75 hour 72 t + 48(.75-t) = 48 etc

somay · Answer

thank you, but where do you get 75 hr?

Reiny · Answer

Look carefully, Damon had .75 not 75 45 minutes = 3/4 hour = .75 hours