Problema Solution

the directions for a weed killer are to mix 5oz. of the weed killer with 3 gallons of water. How many oz. of weed killer should i use with 4 gallons?

Answer provided by our tutors

we will assume that the amount of weed killer is directly proportional to the amount of water


let x = oz of the weed killer to use with 4 gallons of water


5 : 3 = x : 4


by solving we find:


x = 6.67 oz


click here to see the step by step solution of the equation:


Click to see all the steps



use 6.67 oz of weed killer with 4 gallons of water.