A pack of cinnamon scented pencils sells for $4.00. What is the sales tax if the total cost of the pencils is $4.32? ( 6th grade )
1 answer:
(x% * 4) + 4 = 4.32 Solve for 'x': 4x + 4 = 4.32 Subtract 4 to both sides: 4x = 0.32 Divide 4 to both sides: x = 0.08 Multiply by 100: 0.08 * 100 = 8% An easier way to do this is to find the percent increase. First, subtract the two numbers. 4.32 - 4.00 = 0.32 Divide this to the original amount: 0.32 / 4.00 = 0.08 Multiply by 100: 0.08 * 100 = 8% We basically did all the steps from our equation above.
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