Percent Equation
9 is 18% of what number?
Use percent equation to find the answer.
a = p * w
9 = 0.18 *w
9/0.18 = w
50 = w
If you get 15% discount and pay $340 for a telephone, what is its original price?
100% - 15% = 85%
a = p * w
340 = 0.85w
/0.85 /0.85
w = $400
Joe and three friends went to Texas Roadhouse for dinner. The bill was $76.25. They left the server a 20% tip. How much was the total bill including tip?
a = p * w
a = 0.20(76.25)
a = $15.25
$15.25 + $76.25 = $91.50
The price for a blouse at TJ Maxx changes from $25 to $10. Find the percent change.
|10-25|/25*100= 60% decrease
Define markup AND define discount
markup= difference between selling price and cost (adds to the cost)
discount= reduction to the price (reduces the price)
15 is what percent of 72?
Use percent equation to find the answer and round the nearest tenth.
a = p * w
15 = p * 72
15/72 = p
20.8% = p
The price for a box of Raisinets including 6% sales tax is $4.24. Find the original price.
100% + 6% = 106%
a = p * w
4.24 = 1.06w
/1.06 /1.06
w = $4
Abby is the store manager and does not know how to price a refrigerator she is trying to sell at the store. It cost her $900 to buy and she wants to mark up the price by 40%. What will the new price of the refrigerator be?
a = p * w
a = 0.40(900)
a = $360
$900 + $360 = $1260
The price for a pair of boots at Zappos went from $35 to $50. Find the percent change. Round to the nearest tenth.
|50-35|/35*100 = 42.9% raise
There are 50 students in a class. If 14% are absent on a particular day, find the number of students present in the class.
a = p * w
a = .14(50)
a = 7
50 - 7 = 43 students
Jonny went to dinner. The total bill was $75.60. He wants to leave a 24% tip. How much will the tip be?
Use percent equation to find the answer and round to the nearest hundredth.
a = p * w
a = 0.24 * 75.60
a = $18.14
An expensive piece of jewelry cost $155 with a 15% discount. What was the original price of the jewelry?
100% - 15% = 85%
a = p * w
155 = .85w
/.85 /.85
w = $182.35
A compact disk player costs $269. It is on sale for 20% off and there is a 6% sales tax. Find the final price of the CD player.
TIP, DISCOUNT, TAX
a = p * w
a = 0.20(269)
a = $53.80 discount
269 - 53.80 = $215.20
a = p * w
a = 0.06(215.20)
a = $12.92 tax
$215 + $12.92 = $228.12 total
A bicycle marked at $1500 is sold for $1350. What is the percent change?
|1350-1500|/1500*100 = 10% decrease
The list price of a designer dress is $220. A discount of 20% on the price is announced. What is the money amount of the discount?
a = p * w
a = 0.20(220)
a = $44 discount
West took a math test and scored 27 out of 35 points correct. What is the percentage correct on his math test?
Use percent equation to find the answer and round to the nearest tenth.
a = p * w
27 = p * 35
27/35 = p
77.1% = p
A sum of money is deposited in a bank account paying 6% interest per year. After one year there is $1113. How much money was deposited?
100% + 6% = 106%
a = p * w
1113 = 1.06w
/1.06 /1.06
w = $1050
A television costs $375. It is on sale for 25% off and there is a 6.5% sales tax. Find the final price of the TV.
Round to the nearest hundredth.
TIP, DISCOUNT, TAX
a = p * w
a = 0.25(375)
a = $93.75 discount
375 - 93.75 = $281.25
a = p * w
a = 0.065(281.25)
a = $18.28 tax
$281.25 + $18.28 = $299.53 total
The Honda Element was manufactured at a price of $19,700, but was marked up to be sold at a price of $23,000. What is the percent change on the sale price?
|23000-19700|/19700*100 = 16.75% raise
A toy is on sale for 40% off. If the original price was $40, what is the new sales price?
a = p * w
a = .40(40)
a = 16
40 - 16 = $24
47% of the students in a class of 34 students has glasses or contacts. How many students in the class DO NOT have either glasses or contacts?
Use percent equation to find the answer and round your answer to the nearest whole number.
100% - 47% = 53%
a = p * w
a = 0.53 * 34
a = 18 students
A computer software company decides to mark up their new app 40%. After the mark up it costs $35 to purchase. What was the original price?
100% + 40% = 140%
a = p * w
35 = 1.40w
/1.40 /1.40
w = $25
After serious negotiating you got $25 discount on a pair of sneakers. If the original price of the sneakers was $125, what percentage discount did you get?
a = p * w
25 = p * 125
/125 /125
p = 20%
In a certain week, the London stock market went down from 1835 to 1573. What was percent change to the nearest whole percent.
|1835-1573|/1835*100 = 14% decrease
If you buy 2 pens you get a 50% discount on the second pen. If 1 pen costs $2.30, how much will two pens cost you?
a = p * w
a = 0.5 * 2.30
a = $1.15
2 pens = $2.30 + $1.15 = $3.45