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Oksana_A [137]
2 years ago
7

A vacuum cleaner costs £85

Mathematics
1 answer:
Vitek1552 [10]2 years ago
7 0

Answer: £76.50

Step-by-step explanation:

You find 10% of 85 = 8.5

then you do £85-£8.50 = 76.50

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Step-by-step explanation:

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The owner of a grocery store wants to mix two kinds of condy together to make 15lb that he can sell for $5.00 per lb. He wants t
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Answer: 6 pounds of sugar candy, and 9 pounds of chocolate candy.

Step-by-step explanation:

Let's define the variables:

C = pounds of chocolate candies used.

S = pounds of sugar candies used.

We know that he wants to make a total of 15lb, then:

C + S = 15

We also want that the price per pound to be equal to 5$.

This means that the price of the 15 pounds will be the same as the price of the un-mixed candies.

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Then we have a system of equations:

C + S = 15

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To solve this system, we need to start by isolating one of the variables, i will isolate C in the first equation:

C = 15 - S

now we can replace that in the other equation:

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Now we can solve this for S.

$105 - $5.00*S = $75

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$30 = $5.00*S

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Then there are 6 pounds of sugar candy, and we can use the equation:

C + S = 15

C + 6 = 15

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There are 9 pounds of chocolate candy in the mix.

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