Answer:
6 1/12 yd
Step-by-step explanation:
The correct question is
Marcella bought 12 1/4 yards of ribbon. She uses 2 1/2 yards of ribbon for gift packages and 3 2/3 yards to tie balloons.
How many yards of ribbon does Marcella have left?
we know that...
To find out how many yards of ribbon Marcella has left, add up the yards of ribbon used for the gift packages plus the yards of ribbon used to tie the balloons. and subtract this result from the total yards of ribbon bought by Marcella
so
12 1/4 - (2 1/2 + 3 2/3)
but first convert mixed number to an improper fractions
12 1/4 = 12*4+1/4 = 49/4
2 1/2 = 2*2+1/2 = 5/2
3 2/3 = 33+2/3 = 11/3
substitute in the expression above
49/4 - (5/2 + 11/3)
49/3 - (5*3+2*11/6)
3*49-37*2/12
73/12 yd
Convert to mixed number
73/12 yd = 72/12 + 1/12 = 6 1/12 yd
