Answer:
= 0.166667 Inch per hour
Work:
This is a fraction equal to
0.25 Inch ÷ 1.5 hours
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 1.5
0.25 Inch ÷ 1.5
=____________
1.5 hours ÷ 1.5
0.166667 Inch
=__________
1 hour
0.166667 Inch
=___________
hour
= 0.166667 Inch per hour