we know he used 1.25 gallons to cover only 5/7 of the fence. we don't know the area of the fence. we use a variable for area. 1.25 gallons of paint times the area of the fenxe equaled 5/7 of the fence getting painted. you'd need more paint for the entire fence. solve for x says that x=0.57 was the area. so now we say that 0.57 only equated to 5/7 but we want 7/7 painted so so we need 2/7 more paint so we multiply 1.25 by 2/7 to find how much per for that area and we get 0.357. add 0.357 to 1.25 to get 1.607
