9 ft
Set up a ratio...6/18=x/27...reduce to 1/3=x/27...cross multiply and solve for x.
3x=27 so x=9
Answer: x=30
Step-by-step explanation:
The sum of the angles must be 360.
4x+3x+3x+2x = 12x
12x = 360
x =360/12 = 30
$1.35 x 10 = $13.50 for 10 gallons
$23.50 - $13.50 = $10.00
$1.35 x 7 = $9.45 for 7 more gallons
17 gallons is $22.45
17/27 = 459 miles but I'm missing the last bit of change so round it up to 460 for a total of miles
