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Anastaziya [24]
3 years ago
13

Kaifeng Montez can buy an 8-slice pepperoni pizza for $15.92 or a 12-slice pizza for $22.32. Assume the slices are the same size

for both pizzas. Which pizza is a better deal?
Mathematics
1 answer:
TiliK225 [7]3 years ago
4 0

<u>Kaifeng Montez  can buy:</u>

8-slice Pepperoni pizza for $15.92

or

12-slice pizza for $22.32

One slice of Pepperoni pizza is $15.92 ÷ 8 = $1.99

One slice of the second brand pizza is $22.92 ÷ 12 = $1.86

So a piece of the second brand pizza is cheaper that a piece of Pepperoni pizza.

The second brand pizza (12-slice pizza) therefore is a better deal.


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Person B takes 13.8 days to paint the house working alone

<em><u>Solution:</u></em>

Let "x" be the number of days it takes person A  to paint the house

Person A can paint the neighbor's house 6 times as fast as Person B

Therefore.

Number of days it takes person B to paint the house = 6x

Their rates of painting are added to get  the rate working together

\frac{\text{1 house}}{\text{x days}} + \frac{\text{1 house}}{\text{6x days}} = \frac{\text{1 house}}{\text{2 days}}

\frac{1}{x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{1 \times 6}{6x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{7}{6x} = \frac{1}{2}\\\\\ x = \frac{7}{3}= 2.3

Thus person A takes 2.3 days to paint the house working alone

Person B = 2x = 6(2.3) = 13.8

Thus person B takes 13.8 days to paint the house working alone

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I do believe that the answer is 0 solutions.

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