Answer: in this question the easiest way to find an answer is by cross multiplying ....i hope i am right
Step-by-step explanation:
1 hour=25miles
9hours=x
cross multiply which will give u
1x=25x9
1x=225
x=

x=225miles
hope this helps
OR
1hour= 25miles
9hours=x
so u know in 9hours the miles swam will obviously will be more so if it is more less will divide
which will be=
×21 =225 miles
HOPE THIS HELPSSSSSSSSSS!!!!!!!!!!!!!