Question

Jason's monthly practice time on the piano is 35 hours. This month, he has practiced 8.5 hours in week 1, 12 hours in week 2, and 5.5 hours in week 3. How many more hours of practice time does Jason need to complete?

Answer 1

Given :

Monthly practice time , T=35 hours .

This month, he has practiced 8.5 hours in week 1, 12 hours in week 2, and 5.5 hours in week 3.

To Find :

Many more hours of practice time does Jason need to complete .

Solution :

Number of hours he practice in week 1 ,
`t_1=8.5\ hours` .

Number of hours he practice in week 2 ,
`t_2=12\ hours` .

Number of hours he practice in week 3 ,
`t_3=5.5\ hours` .

Now , number of hours left is :

`t=T-t_1-t_2-t_3\\\\t=35-(8.5+12+5.5)\ hours\\\\t=8\ hours`

Hence , this is the required solution .