Question

A small airplane used 4 5/16 gallons of fuel to fly a 1.25-hour trip. How many GALLONS were used EACH HOUR?

Answer 1

13.8 gallons per hour

Explanation:

"Gallons per hour" means to divide gallons by hours. Even the label can be a reminder of what to do:
`\frac{\text{gal}}{\text{hr}}` .

Now for the math...

`4(5)/(16) / 1.25 =4(5)/(16) / 1(1)/(4)`

Changing both numbers to mixed number form helps. (You could also change both numbers to decimals--a calculator would help!)

Change mixed numbers to improper fractions, then divide.

`(69)/(4) / (5)/(4)=\\\\(69)/(4) * (4)/(5)=\\\\\\(69)/(5)=13.8`