Question

Your local coffee shop has announced new hours of operation. Previously: 7 am – 4 pm Monday thru Friday and 7am to Noon Saturday and Sunday The new hours will be: 7am to 7pm Monday thru Friday and 7am -4 pm Saturday and Sunday a) What is the increase in total hours opened? b) Assuming the hourly wage will stay the same (weekly original payroll $ 385.) What will be the total weekly pay under the new hours? c) What is the percentage increase in total pay?

Answer 1

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 = $\frac{161}{385} *100 = 41.8%$