a 14.5 gallon gasoline tank is 3/4 full. how many gallons will it take to fill the tank?

Question

i need help to solve my math question

Answer 1

If it's 3/4 full, then it's 1/4 empty. So it would take 1/4 of 14.5 gallons to fill it.

 

14.5 = 14 1/2 = ((14*2)+1)/2 = 29/2

 

29/2 * 1/4 = (29*1)/(2*4) = 29/8 = 3 5/8

Answer 2

14.5 = (3/4)(x)

x = 19.33

19.33 - 14.5 = 4.83 gal to fill the tank