She started with 12, so after giving 7 feet for her craft project she has 12-7=5 feet left.
There's 12 inches in a foot, so 5 feet is 5*12 = 60 inches.
She gave 28 inches to her sister, so 60-28 = 32 inches remaining.
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Devide 30 by 4.875 that gives 6 pieces of ribbon 4.875 inches long and 0.75 inches of ribbon left over.
You will have 48 inches.
If Elise measures her hair ribbon and it is 9 2/3 inches long and Mindy's hair ribbon is 9 5/8 inches long, Elise has the longer hair ribbon. Elise's hair ribbon is 1/24 of an inch longer than Mandy's.
3/4 of a foot = 9 inches 30 feet = 360 inches 360/9 = 40 pieces of ribbon
4 feet