Calculate for the area of the carpet by multiplying the dimensions given.
Area = Length x width
Area = (15 ft) x (20 ft) = 300 ft²
Then, convert the calculated area to yard² with the conversion factor of 1 yard = 3 ft.
(300 ft²) x (1 yard/ 3 ft)² = 33.33 yd²
Then, multiply this area in square yards with the cost per yd².
C = (33.33 yd²)($16.95/yd²)
C = $565
Lastly, add the installation cost to the calculate initial cost.
total cost = $565 + $250
total cost = $815