9 pencils cost $7.74 which equation would help determine the cost of 6 pencils

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Question:

9 pencils cost $7.74 which equation would help determine the cost of 6 pencils ?

 

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Answer:

Given,

The cost of 9 pencils = $ 7.74,

So, the cost of 1 pencil =

Thus, the cost of x pencils ( say y ) = x × the cost of 1 pencil

Which is the required equation,

If x = 6,

The cost of 6 pencils,

 

Readmore : 9 pencils cost $7.74 which equation would help determine the cost of 6 pencils

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