Question

If 4 oz of solution is required for 2 Gallons of water. How much of the solution should I use if the amount of water required is 22 ounces?

1 Gallon = 128 Ounces

Answer 1

You will requiere 0.34375 oz of the solution for 22 ounces of water.

Explanation:

We should start by matching the units: in the example we have 2 gallons of water, while the question refers to 22 ounces of water.

So, by the equivalence we are given, we now know that 2 gallons of water are equal to 256 ounces.

From this point the question can be solved using an arithmetic method known as cross-multiply (sometimes refered as the Rule of Three). This consist of wrinting an equation of the form:

`(a)/(b) = (c)/(x)\\`

Where b is the amount of solution required for a ounces of water, and x (unknown variable) is the amount of solution for c ounces of water.

So we have the next equation:

`(256)/(4) =(22)/(x)`

We apply the correspondent arithmetic rules so we can calculate the x as follows:

`x=((4)(22))/(256)`

`x=(88)/(256)`

`x=0.34375`

This way we can reply that 0.34375 oz of solution are required for 22 oz of water.