# math

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An advertisement states that eight thermometers cost \$12.42 minus a 3% discount. Dr. wants to order a dozen to take advantage of the savings, sales tax is 5%. What would the cost be? Is my math right? I divided 8 by \$12.42 and got \$1.55 p/thermometer. 12*\$1.55 would cost \$18.60 for 12 minus 3% disc total cost would be \$18.04. add 5% sales tax total cost \$18.94

• math -

Since you probably used your calculator, why not carry all the digits and only round off your final answer.

that way, I got \$18.97

here is my sequence ....

12.42
รท
8
x
12
=
x
.97
=
x
1.05 = 18.9746

so \$18.97

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