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At a local print shop, 18 copies can be made for $6. At this rate, how how many copies could be made for $28?.

Sagot :

By using unitary method, it can be calculated that

For $28, 84 copies can be sold

What is unitary method?

Unitary method is the process in which the value of single unit can be calculated from the value of multiple unit and the value of multiple unit can be calculated from the value of single unit. Sometimes Value of single unit can be less than the value of multiple unit. For example - The relation between the cost of a commodity and the quantity of the commodity

Sometimes Value of single unit can be more than the value of multiple unit. For example - The relation between the number of men and the number of days taken by those men to do a certain job.


Here, unitary method is used

For $6, 18 copies can be sold

For $1, [tex]\frac{18}{6}[/tex] copies can be sold

For $1, 3 copies can be sold

For $28, 3 [tex]\times[/tex] 28 copies can be sold

For $28, 84 copies can be sold

To learn more about unitary method, refer to the link -

https://brainly.com/question/24587372

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