Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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the cost of 5 cases of nuts and 5 cases of chips is $25.95. Two cases of nuts and 6 cases of chips is only $ 22.38 how much is a case of nuts by itself? a case of chips?

 

Expert Solution
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Step 1

Let the cost of cases of nuts be x.

Let the cost of the cases of chips be y.

According to given condition.

...1)
5x5y 25.95
...2)
2x6y 22.38
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Step 2

Multiply equation 1 with 2 and equation 2 with 5.

..(3)
... 4)
10x 10y 51.9
10x30y 111.9
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Step 3

Subtract equation 4 from equation 3.

10x 30y 111.9
10x10y 51.9
20y 60
60
20
y 3
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