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To mix weed killer with water correctly it is necessary to mix 20 teaspoons of weed killer with 4 gallons of water how many gallons of water are needed to mix with the entire box of it contains 45 teaspoons of weed killer

Respuesta :

I would find out how many teaspoons are needed per gallon of water. 20 divided by 4 is 5. So 1 gallon of water needs to be mixed with weed killer for the same ratio. 45 teaspoons divided by 5 is 9. So you will need 9 gallons of water to 45 teaspoons weed killer for the same ratio.
First, let's make a proportion for the problem,

[tex] \frac{20t}{4g} = \frac{45t}{?g} [/tex]

T= teaspoon, g= gallon

[tex]20(x) = 45[/tex]

So 20 × what equals 45??

Simply divide both sides by 20,

[tex]x = \frac{9}{4} = 2.25[/tex]

The above number(s) is what we will × 20 and 4 by.

[tex] \frac{20t}{4g} \times \frac{2.25}{2.25} = \frac{45t}{9g} [/tex]

So for 45 teaspoons you'll need 9 gallons.