Summet uses 0.4 gallon of gasoline each hour

1.68 gallons.

Step-by-step explanation:

So, without mincing words let's dive straight into the solution to the problem above. We are given from the question that the person that is Summet make use of gasoline to mow lawns and the amount of gasoline that Summet uses per hour = 0.4 gallon.

If Summet uses 0.4 gallon of kerosene in 1 hour. Then, Summet will use x gallons of gasoline in 4.2 hours, that is:

0.4  > 1 hour.

x > 4.2 hours. Then,

x = 4.2 × 0.4 = 1.68 gallons of gasoline.

Hence, Summet uses 1.68 gallons of gasoline in 4.2 hours.

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step-by-step explanation:

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