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If I pay you $10.00 to paint a 2' x 2' wall, how much should I pay you to paint a 4' x 4' wall?
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20
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80
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40
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15
That's Correct!
It's Wrong!
The cost of painting a wall is typically determined by the area to be painted. If you double the dimensions of the wall, you quadruple the area to be painted. The area of a 2' x 2' wall is 4 square feet (2 x 2 = 4), and the area of a 4' x 4' wall is 16 square feet (4 x 4 = 16).
So, if you initially paid $10.00 to paint a 2' x 2' wall, you would adjust the payment based on the increase in area for the 4' x 4' wall. Since the area is four times larger, you might consider charging $10.00 x 4 = $40.00 to paint the 4' x 4' wall.
