12.(4pts)
Solve the problem. Round your answer to the nearest tenth of a percent unless otherwise indicated.
Sales of frozen pizza for a club fund-raiser increased from 500 one year to 575 the next year. What was the percent of increase?
Solve the problem. If the answer is an amount of money, round to the nearest dollar.
The appliance store where the Scott family shops offers a 7% discount for paying cash. The Scott family received a discount of $42. What was their total bill before the discount
14.(4pts)
For the restaurant bill, estimate the tip. Then find the exact amount of the tip. State your answers to the nearest hundredth.
The restaurant bill is $85.83. Give the estimate of a 15% tip and the exact amount of a 15% tip.
We do not do your work for you. Once you have attempted to answer your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will learn more if you do your own work. Isn't that why you go to school?
To solve the first problem, let's first find the difference between the two sales figures:
575 - 500 = 75
Next, we need to find the percent increase. To do this, divide the difference by the original value, and then multiply by 100:
(75 / 500) * 100 = 15
So, the percent increase is 15%.
To solve the second problem, we need to find the total bill before the discount. Let's use the formula:
Discount = Percent discount * Total bill
Since the discount is 7% and the Scott family received $42 off, we can set up the equation:
0.07 * Total bill = $42
Divide both sides by 0.07 to isolate the total bill:
Total bill = $42 / 0.07
Total bill = $600
So, their total bill before the discount was $600.
For the third problem, to estimate the tip, multiply the bill amount by the tip percentage:
$85.83 * 0.15 ≈ $12.88
So, the estimated tip is approximately $12.88.
To find the exact amount of the tip, use the same formula but without rounding:
$85.83 * 0.15 = $12.87
So, the exact amount of the tip is $12.87, rounded to the nearest hundredth.