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Question

Jane wants to send Christmas cards to her friends. She decorates the border with a satin ribbon. If the satin ribbon costs 50 cents per inch, what is the total cost of the ribbon?

A
$3
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B
$5
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C
$6
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D
$7
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Solution

The correct option is B $5
Length of the ribbon = Perimeter of the card
Perimeter = 2 × (Length + Width)
= 2×(10+5)
= 2×15
= 30 inches

Cost of the satin ribbon is 50 cents per inch.
Total cost = 10×50
= 500 cents

100 cents = 1 dollar
500 cents = 5 dollars

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