Mpg = (d)istance traveled divided by (g)as used
mpg= 476/14
mpg=34
34 = d/g
34 = 578/g
g = 578/34
g = 17 gallons
You need 17 gallons to drive 578 miles.
Total Units = 4+5+9 = 18
so, 1 unit value = 180/18 = 10
Degrees will be : 4(10), 5(10), 9(10) = 40, 50 , 90
divide the number of people by how many can sit at each table
174/4 = 43.5
so they will need 44 tables