Geometry
posted by Cassie .
On the scale drawing of a floor plan 2 inches= 5 ft. A room is 7 inches long on the scale drawing. Find the actual length of the room.

2 / 5 = 7 / x Multiply both sides by x
2 x / 5 = 7 Multiply both sides by 5
2 x = 7 * 5
2 x = 35 Divide both sides by 2
x = 35 / 2
x = 17.5 ft