A website sells two brands of face paint. Brand A costs $3 for 4 fl oz. Brand B costs $7 for 10 fl oz. How much more per fluid Ounce does Brand A cost than Brand B?

Brand A costs 5 cents more than Brand B

Step-by-step explanation:

divide 3 by 4 to get the unit price of brand a

divide 7 by 10 to get the unit price of brand b

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)