The students are selling cookies at a school fair. Sara is selling three chocolate chip cookies for $2.49.

Mathematics

1 answer:

yan [13]3 years ago

4 0

3 chocolate chip cookies - $2.49 .

So 1 chocolate chip cookies costs 2.49/3=$0.83

1 chocolate chip cookie costs $0.83

20 chocolate chip cookies cost 0.83*20=$16.6

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Hey!

The first step to solving this equation would be to subtract 5 from both sides of the equation.

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New Equation {Added Subtract 5 to Both Sides} :
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Now we solve our new equation.

Old Equation :
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Quadratic Equation ( 2 ) {Solved} :
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yarga [219]

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Solve by substitution. We will substitute equation (1) into equation (2):

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Substitute equation (1) into equation (2) :
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3x - 8y = 24 // Equation (2)
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