See the photo attached for the answers
Answer:48.6
we know that
You can paint 75 square feet of a surface every 45 minutes
so
using proportion
Find out how long it takes you to paint a surface area of 81 square feet
45(81)/75=48.6
hope this helped and I hope you get a correct answer :D
The mileage is 27.6 mi/gal
Miles driven = 552.4 mi
Calculate gallons used.

Answer: 20.015 gallons (approximately 20 gallons)
The answer will be p+q+r, or p+r+q, or q+p+r. Hope it help!