Answer:
The number of square feet that can be painted with 3 gallons of paint is 18.667 ft²
Step-by-step explanation:
Stacy and Neil painted 280 ft² of their living room wall with 45 gallon of paint.
To find the number of square feet that can be painted with 3 gallons of paint,
we will simply use proportion;
Let x = number of square feet that can be painted with 3 gallons of paint
280 ft² = 45 gallons
x = 3 gallons
cross multiply
45 × x = 280 × 3
45x = 840
Divide both-side of the equation by 45
45x/45 = 840/45
(on the right-hand side of the equation, 45 at the numerator will cancel-out 45 at the denominator leaving us with just x while on the right-hand side of the equation, 840 will be divided by 45)
x = 18.667 ft²
Therefore, the number of square feet that they can paint with 3 gallons of paint is 18.667 ft²
