The gauge on a gas tank showed that the tank is 3/4 full. after traveling some distance, the gauge showed that the tank is 1/8 full. the tank was then filled to its full capacity by adding 16.8 gallons of gasoline. how many gallons of gasoline were in the tank when it was 3/4 full?

First we find how much was left as 1/8 full

16.8 times 0.125

2.1

Now add this to the amount that was added to reach full gauge

2.1 +16.8

18.9

Next we find out what 3/4 of a full tank is

18.9 times 0.75

14.175

So, the gas tank has 14.175 gallons when it is 3/4 full

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step-by-step explanation:

the answer is 13 cm