Answer:
3/10 of the yard.
Explanation:
What we know:
Ryan can mow 3/5 of a yard in 2 hours.
What we need to know:
How much of the yard Ryan can mow in 1 hour, so the unit rate.
How do we do this:
It's simple if you think about it.
Just divide 3/5 by 2 (or multiply by 1/2)
3/5 * 1/2
3/(5*2)
3/10 of the yard can be mowed in one hour.