Which ratios have a unit of 3 select ALL that apply
7 miles: 3/4 hour
2 1/2 miles: 3 hours
9/5 miles: 3 hours
1/3 miles: 2 3/8 hours
4 miles: 3 1/3 hours
9/8 miles: 5/6 hours
The ratios that have a unit of 3 are:
1) 7 miles: 3/4 hour
2) 2 1/2 miles: 3 hours
3) 4 miles: 3 1/3 hours