Question

a manufacturer uses $\frac{3}{4}$ yard of fabric in each skirt.
how many yards of fabric will the manufacturer use in 4 skirts? in 7 skirts? in 9 skirts?
2 yards; 5 yards; 7 yards
3 yards; $5\frac{1}{4}$ yards; $6\frac{3}{4}$ yards
4 yards; $5\frac{1}{4}$ yards; 8 yards
3 yards; $5\frac{1}{4}$ yards; 7 yards

Explanation:

Step1: Calculate fabric for 4 skirts

Multiply per-skirt fabric by 4:
$\frac{3}{4} \times 4 = 3$

Step2: Calculate fabric for 7 skirts

Multiply per-skirt fabric by 7:
$\frac{3}{4} \times 7 = \frac{21}{4} = 5\frac{1}{4}$

Step3: Calculate fabric for 9 skirts

Multiply per-skirt fabric by 9:
$\frac{3}{4} \times 9 = \frac{27}{4} = 6\frac{3}{4}$

Answer:

3 yards; $5\frac{1}{4}$ yards; $6\frac{3}{4}$ yards (matches the second option)