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Haley's car gets at least 18 miles per gallon. She is planning a trip that is 200 miles.

What is the minimum number of gallons she'll need?
11
12
13

User Johndeu
by
7.2k points

2 Answers

5 votes
To answer the question, use the concept of ratio and proportion. Haley's given mileage should be equal all throughout. Let x be the minimum number of gallons that Haley needs, the proportion becomes,
18 miles / 1 gallon = 200 miles / x gallons
The value of x is 11.11 gallons. Thus, Haley need at least 11.11 gallons.
User Johndodo
by
7.0k points
5 votes

Answer:


11\ gallons

Explanation:

we know that

Haley's car gets at least
18 miles per gallon

so

by proportion

Find the minimum number of gallons she'll need for a trip that is
200 miles


(1)/(18)(gallon)/(miles) =(x)/(200)(gallon)/(miles)\\ \\x=200/18\\ \\x= 11.11\ gallons

User Cachapa
by
7.8k points