Question

Julia completes her homework in an hour. She spends 7/12 of the time doing her math homework and 1/6 of the time practicing her spelling words. The rest of the time she spends reading. How many minutes does Julia spend reading?

Answer 1

15 min

Explanation:

Julia spends
`(7)/(12)` in math.

and spends
`(1)/(6)` in spelling.

Lets make
`(1)/(6)*2=(2)/(12)` for calculation propuses.

Julia spends
`(7)/(12) +(2)/(6)=(9)/(12)` doing her math and spelling homework.

And lets make
`1 hour =(12)/(12)`

`(12)/(12)-(9)/(12) =(3)/(12)` and
`(3)/(12) / 3 =(1)/(4)`

So, Julia spends
`(1)/(4)  hour` in reading.

If I divide an hour into 4 equal units, each unit equals 15 min, so 1 unit is 15 min.

Julia spends 15 min in reading.