For this case, we propose a rule of three, since with \ frac {2} {3} of gallons it covers 3% of wall, then:
[tex]\frac {2} {3}[/tex] gallon --------> 3%
1 gallon -----------------------> x
Where the variable "x" represents what percentage of wall can be painted with 1 gallon of paint. So:
[tex]x = \frac {1 * 3} {\frac {2} {3}} = \frac {3} {\frac {2} {3}} = \frac {3 * 3} {2} = \frac { 9} {2} = 4.5[/tex]
Thus, with 1 gallon of paint 4.5% of wall are painted.
Answer:
4.5%
