Answer:
[tex]h = 316[/tex]
Explanation:
Given
[tex]Skateboard = 167[/tex]
[tex]Savings = 88[/tex]
[tex]Earnings = 0.25/hour[/tex]
Required
Determine the number of hours he needs to work
From the given parameters, we understand that:
His savings + Total Earnings = Skateboard (cost)
His total earnings in h hours is: 0.25h
So, the above expression can be represented (mathematically) as:
[tex]88 + 0.25h = 167[/tex]
Collect Like Terms
[tex]0.25h = 167 - 88[/tex]
[tex]0.25h = 79[/tex]
Make h the subject
[tex]h = \frac{79}{0.25}[/tex]
[tex]h = 316[/tex]
He needs to work for 316 hours
