Mike is reading instructions for assembling a tree house. The instructions include a scale drawing of the floor plans of the tre
e house that shows the floor as a square with 4-inch-long sides. The scale of the drawing is 12 inch = 2 feet. If Mike were to build a tree house according to the floor plans, what would be the area of the floor of the tree house in square feet? _________
Explanation: It says that the square has sides that are 4 inches long, which means that all of the sides are 4 inches long. If two inches is 12 feet, then all you have to do is multiply it by 2, since the sides are 4 inches. That means that all sides are 24 ft long. Now just calculate the area by multiplying the length and the width to get 144 square feet.
To find a percentage of a number, multiply by the decimal form of that percentage(20%=0.20). So, take the cost, $430, and multiply by common state sales tax (7% for me)---430 x 0.07 = 30.10 The sale tax rate is 7%.
