Question

A construction crew has just finished building a road. The crew worked for 4 2/7 days. If the road is 9 kilometers long, how many kilometers of road did they build each day? (Assume they built the same amount each day.)

Answer 1

4 2/7 equals 30/7
30/7 divided by 9 equals 10/21
So the crew built 10/21 of a km everyday

Answer 2

4 2/7 days = 30/7 days

9 kilometres total/30/7 days = 2.1 kilometres per day