Tina has

Tina has 10 packages of yarn to knit a scarf.
She uses 1/3 of package of yarn for each inch of length she adds to the scarf.
If Tina uses all the yarn, how long will her scarf be?

Correct answer:

x =  30 in

Step-by-step explanation:

n=10 h=1/13=3 in/y  x=n h=10 3=30 in

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