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Mathematics 22 Online
OpenStudy (anonymous):

Sarah wants to give the pizza delivery boy a 20 percent tip. If the pizza bill is $48.25, how much should she tip?

OpenStudy (wolfe8):

A percent means the percentage of its number over 100. So here, 20% means 20/100 of something. What is that something in your case?

OpenStudy (anonymous):

Move the decimal to the left one place to get a 10% tip. Then multiply that by 2 for a 20% tip. so 48.25 10% tip = 4.825. 20% tip = 9.65

OpenStudy (anonymous):

Nancy is very happy with the service at the hotel she is staying in. She wants to tip the room service waiter 15 percent of the food bill, which is $120.75. How much should she tip?

OpenStudy (wolfe8):

You do the same thing. So here you have 15/100 of something. That something is?

OpenStudy (anonymous):

15\100 is 0.15 .

OpenStudy (wolfe8):

Yes and that is the percentage of something. Your question says the tip should be a percentage of the food bill. So you multiply that with the food bill.

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