Question 764658
A gasoline pump delivers 2 and one forth gallons of gas per minute.
 How long will it take to fill a gas tank with a capacity of 18 gallons?
:
Except 4 min is not the answer, if you divide by a fraction you have to
invert the fraction and multiply
18 * {{{4/9}}} = {{{72/9}}} = 8 minutes
you could also cancel the 9 into 18 and get it easier
:
You can check this on your calc using decimals: 
enter 18 / 2.25 results is 8