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C $1,166.40
To calculate the total cost of gasoline for the round trip, you would divide the total distance by the RV's miles per gallon to find out how many gallons of gasoline will be needed. Then you would multiply that number by the cost per gallon of gasoline to get the total cost.
Total distance for round trip: 1,701 miles x 2 = 3,402 miles
Gallons of gasoline needed for round trip: 3,402 miles / 10.5 miles per gallon = 324 gallons
Total cost of gasoline for round trip: 324 gallons x $3.60 per gallon = $1,166.40
Therefore, Clinton and Stacy will spend $1,166.40 on gasoline for the round trip to Yellowstone National Park and back home.