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larisa [96]
3 years ago
8

sunscreen is priced at $10 per bottle plus 8% tax if Tanya purchases a bottle of sunscreen with a $20 bill then what is her chan

ge
Mathematics
2 answers:
Naddik [55]3 years ago
7 0

Answer:

$9.20

Step-by-step explanation:

Hello, I think I can help You with this.

Step 1

find the total price of the sunscreen

Tany paid $10 + 8 % tax, it means she paid 108% of the $10, let's find that value using a rule of three

If

$10⇒100%

$x?⇒108%

the relation is

\frac{10}{100}=\frac{x}{108}\\ solve\ for\ x\\\frac{10*108}{100}=x\\x=\frac{1080}{100}\\ x=10.8

she paid $10.80

Step 2

find the difference  between $20 and $10.80 to know her change

change=$20-$10.80

change=$9.20

have a great day

alina1380 [7]3 years ago
3 0

$9.20

10*1.08 is 10.80. 20 - 10.80 is 9.20.

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Answer:

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Step-by-step explanation:

Given

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This is calculated as:

P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)

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P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1}  + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}

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P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1}  + \frac{9}{20} * \frac{9- 1}{20- 1}

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