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Citrus2011 [14]
2 years ago
6

If three sandwiches and two bags of chips cost $22. 00, and two sandwiches and one bag of chips cost $14. 25, how much does a ba

g of chips cost?.
Business
1 answer:
morpeh [17]2 years ago
8 0

A bag of chips will cost $1.25. The price is calculated by making linear equations in two variables and solving them by substitution method.

<h3>What is a linear equation in two variables?</h3>

Linear equation in two variables can be defined as an equation in the form:

\rm ax + by = c , where x and y are variables and a and b are not equal to 0.

For the given problem, let "s" be the cost of a sandwich and "c" be the cost of a chips bag.

Given:

The cost of three sandwiches and two chips bags is $22.00.

Therefore, the 1st equation will be:

\rm 3s +2c = 22                              

The cost of two sandwiches and one chips bag is $14.25.

Therefore, the 2nd equation will be:

\rm 2s + c = 14.25

To calculate the cost of a chips bag, we need to solve equation 1 and equation 2 by the substitution method.

From equation 2, the value of c will be:

\begin{aligned}\rm 2s + c &= 14.25\\\\c &= 14.25 - 2s\end                                   ... (3)

Now we will put  \rm c = 14.25 - 2s  in equation 1:

\begin{aligned} \rm 3s + 2c &= 22\\\\3s + 2(14.25 - 2s) &= 22\\\\3s + 28.50 - 4s &= 22\\\\-s + 28.50 &= 22\\\\s &= 28.50 - 22\\\\s &= \$6.50\end

On substituting the value of s in equation 3:

\rm  c = 14.25 - 2s \\\\c = 14.25 - 2(6.50)\\\\c = 14.25 - 13\\\\c = \$1.25

Therefore the cost of a bag of chips is $1.25.

Learn more about linear equations in two variables here:

brainly.com/question/84787

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