Solution :
Cost of carpeting per square yard = $ 15.00
For 3 ft by 6 ft
1 yard = 3 feet
∴ 1 feet = [tex]$\frac{1}{3}$[/tex] yard
So,
Therefore, area of 3 ft by 6 ft is = [tex]$3 \times \frac{1}{3} \times 6 \times \frac{1}{3} $[/tex]
= 1 x 2
= 2 square yard
Therefore, cost of carpeting 2 square yard = 2 x 15
= $ 30
For 9 ft by 12 ft
1 yard = 3 feet
∴ 1 feet = [tex]$\frac{1}{3}$[/tex] yard
So,
Therefore, area of 9 ft by 12 ft is = [tex]$9 \times \frac{1}{3} \times 12 \times \frac{1}{3} $[/tex]
= 3 x 4
= 12 square yard
Therefore, cost of carpeting 2 square yard = 12 x 15
= $ 180
