Question

Helppppp! After 2 1/4 h, a chainsaw has used 2 13/16 gal of fuel.

How many gallons of fuel did the chainsaw use each hour?

Enter your answer as a mixed number in simplest form.

Answer 1

every 2 1/4 hour, 2 13/16 gallons#every 1 hour, x gallons
x=(1 × 2 13/16)/(2 1/4)=(45/16)/(9/4)=(45×4)/(16×9)=180/144=90/72=10/8=5/4= 1 1/4 Gallons

Answer 2

`1(1)/(4)`gallon/hour

Explanation:

After
`2(1)/(4)` hour a chainsaw has used
`2(13)/(16)` gallons of fuel.

`2(1)/(4)` hours =
`(9)/(4)` hours

`2(13)/(16)` gallons =
`(45)/(16)` = 2.8125 gallons

The chainsaw used fuel after
`(9)/(4)` hours =
`(45)/(16)` gallons

The chainsaw used fuel in 1 hour =
`((45)/(16))/((9)/(4))`

=
`(45)/(16)` ÷
`(9)/(4)`

=
`(45)/(16)` ×
`(4)/(9)`

=
`(180)/(144)`

=
`(90)/(72)`

=
`(30)/(24)`

=
`(15)/(12)`

=
`(5)/(4)`

=
`1(1)/(4)` gallons of fuel

Chainsaw used
`1(1)/(4)` gallons of fuel in each hour