posted by kit on .
If Olivia drove x km at 60 km/h and then twice as far at 80 km/h. In terms of x, how many hours did the trip take? Give the answer in simplest terms
the time for the first trip was x/60 hrs
the time for the second trip was 2x/80
so the total time was x/60 + 2x/80
= x/24 hours