# My fuel is at 80% full. After traveling some distance, only 30% of that fuel is left. I fill the tank to full capacity by putting in 19 gallons. What is the full capacity of my tank?

25 gallons

First you have to find what percent of the tank is left after 30% of 80% of the fuel has been spent

Now divide both sides by 76

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Full tank capacity is 25 gallons

The only thing we are interested is the tank. Not the distance travelled.

The tank has 30% of its original content left.

Thus the amount of fuel left is 30% of 80%

Amount of the whole tank taken up by fuel is:

We know that it takes 19 gallons to fill up the 76% volume left.

So by ratio we have:

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If you filled the tank with 19 gallons to reach full capacity and it was initially at 80% full, then the amount of fuel added was 20% of the tank's capacity. To find the full capacity of the tank, you can set up the equation:

19 gallons = 20% of full capacity

Solve for the full capacity:

Full capacity = 19 gallons / (20/100) = 19 gallons / 0.20 = 95 gallons

So, the full capacity of your tank is 95 gallons.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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