Part (a)
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See the attached figure which represents the problem.
So, we can note that there are 3 hours increase from Monday thru Friday
and 4 hours increase in both of Saturday and Sunday
So, the increase in total hours opened = 3*5 + 4*2 = 23 hours
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Part (b):
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weekly original payroll $ 385
Total working of old hours = 9 * 5 + 5 * 2 = 55 hours
so, the hourly payroll = 385/55 = $ 7
Assume the hourly wage will stay the same
Total working of new hours = 55 + 23 = 78 hours
So, the total weekly pay under the new hours = 78 * 7 = $ 546
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Part (c):
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The total pay for old hours = $ 385
The total pay for new hours = $ 546
The increase in the total pay = 546 - 385 = $ 161
The percentage increase in total pay = [tex] \frac{161}{385} *100 = 41.8%[/tex]
