Question

Joel has a goal to practice his clarinet for 4 hours per week. The list 5 1below shows the number of hours Joel has practiced so far this week. Monday 1 hours 2 1 Wednesday 1 hours 3 1 Thursday 1 hour How many more hours does Joel need to practice this week to meet his goal?

Answer 1

Joel need to practice this week =
`(3)/(4)` hour

Explanation:

P.S - the exact question is -

As given

Total practice goal of Joel =
`4(1)/(2)` hours

He practiced on : Monday -
`1(1)/(2)` hours

Wednesday -
`1(1)/(4)` hours

Thursday - 1 hour

Let the remaining practice = x hours

⇒ Total practice =
`4(1)/(2)` hours

⇒
`1(1)/(2)` +
`1(1)/(4)` + 1 + x =
`4(1)/(2)`

⇒ 1 +
`(1)/(2) + 1 + (1)/(4) + 1 + x = 4 + (1)/(2)`

⇒3 + x - 4 =
`(1)/(2) - (1)/(2) - (1)/(4)`

⇒x - 1 =
`-(1)/(4)`

⇒x =
`-(1)/(4) + 1 = (-1 + 4)/(4) = (3)/(4)`

⇒x =
`(3)/(4)` hour

∴ we get

Joel need to practice this week =
`(3)/(4)` hour