Tank of fuel

A 14.5-gallon tank of fuel is 3/4 full. How many more gallons will it take to fill up the tank?

Correct answer:

x =  3.625 gal

Step-by-step explanation:

$x=(1-{\displaystyle \frac{3}{4}})\cdot 14.5={\displaystyle \frac{29}{8}}={\displaystyle \frac{29}{8}}\text{ gal}=3.625\text{ gal}$

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