Solve.
-The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 30 feet and 6-foot walls requires 1.8 quarts of paint, find the
Amount of paint needed to cover the walls of a room with a perimeter of 50 feet and 6-foot walls.
A) 30 quarts
B) 6 quarts
C) 300 quarts
D) 3 quarts

Question

Quizplus · Accepted Answer

The amount of paint varies jointly with the perimeter and height, so we use the formula: Paint = k * Perimeter * Height. Given 1.8 = k * 30 * 6, we find k = 0.01. For a room with a perimeter of 50 feet and 6-foot walls, Paint = 0.01 * 50 * 6 = 3 quarts.

Solve. -The Amount of Paint Needed to Cover the Walls of of a Room