suppose you were buying two kinds of chips for a party. Each bag of potato chips cost $2.50 and a bag of corn chips cost $3. You must have at least 10 bags for

Question

can be no more than $30

Answer 1

Lets say that a bag of potato chips is (x) and a bag of corn chips is (y).

 

Now we set up the equations:

 

2.50x + 3y = 30

x + y = 10

 

The first equation shows that every bag of potato chips is $2.50 and every bag of corn chips is $3 and together can be no more than $30.

The second equation shows that both x and y bags together has to add up to 10.

 

Then use substitution or eliminating to find x or y and then plug one of those variables in to find the other variable.

 

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