Andy estimated that he would need 72 feet of lumber for a tree house project. He later found that the actual amount of lumber needed was 61 feet. What was the percent error of Andy's estimation?

Question

texaschic101 · Answer

72 - 61 = 11
11/61 = 0.18 = 18%

anonymous · Answer

ty

texaschic101 · Answer

anytime :)

anonymous · Answer

A CD usually sells for $15.00. If the CD is 10% off, and sales tax is 7%, what is the total price of the CD, including tax?

anonymous · Answer

@texaschic101

texaschic101 · Answer

15 - .10(15) = 15 - 1.50 = 13.50
13.50 (.07) = 0.945 rounds to 0.95

total price is : 14.45

anonymous · Answer

ok last one A pair of shoes usually sells for $69. If the shoes are 40% off, and sales tax is 7%, what is the total price of the shoes, including tax?

texaschic101 · Answer

69 - .40(69) = 69 - 27.60 = 41.40
41.40 (.07) = 2.898 rounds to 2.90

total cost is : 41.40 + 2.90 = 44.30