The total cost of 7 pairs of shoes will be $140.
Given information:
4 pairs of shoes cost 80$.
It is required to find the cost of 7 pairs of shoes.
The cost of one pair of shoes will be,
[tex]\dfrac{80}{4}=\$20[/tex]
So, the cost of 7 pairs of shoes will be,
[tex]20\times 7=\$140[/tex]
Therefore, the cost of 7 pairs of shoes will be $140.
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https://brainly.com/question/1520105
