# A bicycle helmet is priced at \$18.50. If it is on sale for 10% off and there is 7% sales tax, how mu

Discussion in 'Calculator Requests' started by math_celebrity, Nov 30, 2016.

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A bicycle helmet is priced at \$18.50. If it is on sale for 10% off and there is 7% sales tax, how much will it cost after tax?

Calculate percent off first:
10% off means 90% off the price
\$18.50 * (1 - 0.1)
\$18.50 * (0.9) = 16.65

Now, add 7% sales tax to the discounted price
Price after sales tax = Discounted Price * 1.07
Price after sales tax = 16.65(1.07)
Price after sales tax = 17.82

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