Question

Robert -shirt with a map of Columbus voyages on the front and a picture of Columbus on the back he wanted to buy it to wear on Columbus Day the t-shirt cost $14.98 plus eight percent tax sales tax Robert have the clerk a twenty dollar bill how much chain did he receive

Answer 1

3.82 because 20-14.98 is 5.02 and the 8percent tax gets you 3.82

Answer 2

$3.82

Explanation:

You want the change from a $20 bill when it is used to pay for a $14.98 t-shirt and 8% sales tax.

Price with tax

The amount of tax will be 8% of the marked price of the shirt:

tax = price × 0.08 = $14.98 × 0.08

When that is added to the price of the shirt, you have ...

price with tax = $14.98 + $14.98 × 0.08 = $14.98 × (1 +0.08)

Change

The amount of change the clerk will give Robert is the difference between the cost of the shirt (with tax) and the $20 tendered:

change = $20 - 14.98(1 +0.08)

A calculator can figure this amount without having to show you the results of intermediate computations.

change = $3.82

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Additional comment

The tax is computed as $1.1984, which rounds to $1.20. Then the cost of the shirt with tax is 14.98 +1.20 = 16.18. The change is $20.00 -16.18 = $3.82. The point here is that these intermediate steps are not necessary with an appropriate calculator. The rounding can be done at the end.

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