It will take Chad 12 hours to drive 672 miles and he will need 24 gallons of gasoline
Given that: Chad is planning a 672–mile road trip
Chad’s car can travel 308 miles with 11 gallons of gas. We can use this information to calculate the miles 1 gallon can cover. Thus:
Number of miles per gallon = 308/11 = 28 miles per gallon
Also, Chad plans to drive 168 miles every 3 hours. We can use this information to calculate Chad's speed. Thus:
Speed = 168/3 = 56 miles per hour
To determine how many hours it will take Chad to drive 672 miles:
Speed = distance/time
=> time = distance/speed
Speed = 56 miles per hour and distance = 672 miles
time = 672/56 = 12 hours
Number of gallons = distance / Number of miles per gallon
Number of gallons = 672/28 = 24 gallons
Therefore, it will take Chad 12 hours to drive 672 miles and he will need 24 gallons of gasoline
Learn more about speed, distance and time on:
https://brainly.com/question/26046491
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