Wanda is dressing up as a witch this year. she is making her own costumes. she needs 9.8 yards of black fabric. fabric cost a 1.74 per yard. how much will she spend on fabric to make her costume?

Wanda will spend $17.052 on fabric  to make her costume.

Step-by-step explanation:

We can use proportion to solve the problem.

The question asks us to find the amount  Wanda will spend to buy 9.8 yards of black fabric if  a fabric cost $1.74 per yard.

Using proportion;

Let x be the cost  of 9.8 yards of black fabric.

$1.74 =  1 yard

x     = 9.8 yards

Cross-multiply

x × 1 = 1.74 × 9.8

x = $17.052

Therefore, Wanda will spend $17.052 on fabric to make her costume.