Question

Darryl wants to add enough water to 8 gallons of a 10% bleach solution to make a 5% bleach solution. Which equation can he use to find x, the number of gallons of water he should add?

Answer 1

Answer:- 0.8/8+x=5/100

Step-by-step explanation:

Answer 2

Answer: He should add 8 gallons of water to make 5% bleach solution.

Step-by-step explanation:

Let the number of gallons of water he should add be 'x'.

Since we have given that

Total number of gallon we have = 8

It has 10% beach solution i.e. $\frac{10}{100}\times 8=0.8\ gallon$

We need to make it a 5% bleach solution by adding water to it.

so, our equation becomes,

$\frac{Bleach}{Total}=\frac{0.8}{8+x}=\frac{5}{100}\\\\\frac{0.8}{8+x}=\frac{1}{20}\\\\20\times 0.8=8+x\\\\16=8+x\\\\x=16-8\\\\x=8\ gallons$

Hence, he should add 8 gallons of water to make 5% bleach solution.