Answer:
13/4 gallons will take her to travel 80 miles
Step-by-step explanation:
40miles ---------------- 13/8 gallons
first will need to get how many gallons will it take to travel 1 mile?
40miles ---------------- 13/8 gallons
1 miles ---------------- ? (x)
by cross multiplication = 40 * (x) = 1 * 13/8
40x = 13/8
therefore = /40
= *
x = 13/320
therefore, 1 miles ---------------- 13/320
80 miles ---------------- ? (x)
by also cross multiplying, 80 * 13/320 = 1 * (x)
therefore, x = 13/4 gallons