Dolls are on sale for $15.89, plus an additional 8% tax. How much would two dolls cost?

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Dolls are on sale for $15.89, plus an additional 8% tax. How much would two dolls cost?

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Answer 1 · 2016-12-20T20:18:07

$34.32 $$ $34.32$$

Explanation:

$cost of one doll = price of doll + price of doll \times \frac{percentage tax}{100}$ $"Cost of one doll" = "price of doll" + "price of doll"times"percentage tax"/100$

Because of PEMDAS(Order Of Operations) we know we first need to multiply and divide.

$15.89 + 15.89 \times \frac{8}{100} = 15.89 + \frac{127.12}{100} = 15.89 + 1.2712$ $15.89 + 15.89 times8/100 = 15.89 + (127.12)/100 = 15.89 + 1.2712$

Our next step is to do the adding.

$15.89 + 1.2712 = 17.1612$ $15.89 + 1.2712 = 17.1612$

And now we round off the answer to have only two decimal places for the cents.

$17.1612 \to 17.16 $ = cost of one doll$ $17.1612 -> 17.16$ = "cost of one doll"$

We want to buy two dolls, so our price doubles.

$cost of two dolls = cost of one doll \times 2$ $"cost of two dolls" = "cost of one doll" times 2$

$17.16 \times 2 = 34.32 $$ $17.16 times 2 = 34.32$$

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Dolls are on sale for $15.89, plus an additional 8% tax. How much would two dolls cost?

1 Answer

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