There’s this app called Socratic that you can use. It’s like this one but it’s a little different
If the biker is going at the same rate than in 3 hours he should go 34.8 miles
Distance = rate x time
distance = 60 miles per hour x 7 1/2 hours
distance = 450 miles
Let's assume length of the room as y
so the width of the room = y - 5
Area
y * (y - 5) = 750
speed is 45 miles per hour. 135/45=3, so the answer is 3hours (A)
