Answer:
1.5 miles
Explanation:
We can make a proportion to solve
He runs 3/4 or 0.75 miles in 1/2 or 0.5 hours, and he runs x miles in 1 hour
0.75/0.5=x/1
Cross multiply
0.75*1=0.5*x
0.75=0.5x
We need to solve for x. To do this, we have to get x by itself. x is being multiplied by 0.5. To undo this, divide both sides by 0.5
0.75/0.5=0.5x/0.5
1.5=x
In 1 hour, he runs 1.5 miles