Dena has 30 metres of ribbon to dcorate 12 pillows.How much ribbon can she use for each pillow?

30/12 = 2 6/12 = 2 1/2 meters

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To find out how much ribbon Dena can use for each pillow, you need to divide the total length of ribbon (30 meters) by the number of pillows (12).

To calculate this, you can use the formula:

Ribbon per pillow = Total ribbon length / Number of pillows

Substituting the given values:

Ribbon per pillow = 30 meters / 12 pillows

Performing the calculation:

Ribbon per pillow = 2.5 meters

Therefore, Dena can use 2.5 meters of ribbon for each pillow.