Question

Writing proportions
5 rubber stamps cost $9.70.
Which equation would help determine the cost of 11 rubber stamps?
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Answer 1

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 Answer. $9.70/5 = ?/11 is the proportion you would set up to solve this!

Answer 2

If the cost of 5 rubber stamp cost is $9.70

we can divide by 5

9.70/5 = $1.94

then,

The cost of 11 rubber stamp cost is $1.94 X 11

= $21.34.