Answer:
Amanda has 17.7 yards of silk left
Explanations:
The total yards of silk material that Amanda has = 25 yards
Number of yards required for the skirt = 18/17 yards
Number of yards required for the dress = 11/12
Number of yards required for the shirt = 7/4
Number of yards required for the pants = 25/7
Total number of yards required to make the piece = 18/17 + 11/12 + 7/4 + 25/7
Total number of yards required to make the piece = 7.3 yards
Yards of silk that Amanda has left = (Total yards of silk that she has) - (yards required to make the piece )
Yards of silk that Amanda has left = 25 - 7.3
Yards of silk that Amanda has left = 17.7 yards