3.1
What is 60% of 125?
75
hich proportion can be used to find 65% of 90?
𝖠 65/90 =x/100
𝖡 65/x =90/100
𝖢 65/100 =x/90
𝖣 x/100 =90/65
C
The value of an autographed baseball card increased from $39 to $65. What is the percent increase in value of the baseball card? Round to the nearest hundredth of a percent.
66.67%
A laptop was originally sold for $975. The laptop is now on sale for $828.75. What is the percent markdown?
15%
In a–d, choose whether the fraction and percent are equivalent.
a. 401,000 and 40%
b. 65 and 120%
c. 5033 and 117%
d. 18 and 12.5%
no
yes
no
yes
During bowling practice, Marley rolled 14 strikes out of 70 attempts. What percent of Marley’s attempts were strikes?
20%
Tyson multiplies 75 by 1.15. Which number might Tyson be trying to find?
a 115% of 75
b 11.5% of 75
c 15% of 75
𝖣 1.15% of 75
A
A zookeeper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo’s lion gave birth, the newborn weighed 3.5 pounds. What is the zookeeper’s percent error?
20%
Jermaine buys T-shirts for $6 each and marks up the price by 45%. How much profit does Jermaine make from each T-shirt sold?
$2.70
Justin correctly answered 92% of the questions on a geography quiz. Liz answered 47 of the 50 questions correctly. Who earned the higher score? Explain
Liz
When you find 420% of 85, what are you looking for?
𝖠 A percent
𝖡 The part
𝖢 The whole
𝖣 A ratio
The Part
A deli owner sold 90 sandwiches in one day. Of those sandwiches, 36 were pastrami. Write and solve an equation to show what percent of sandwiches sold were pastrami.
40%
A body builder consumed 4,400 calories yesterday. Today, he consumed 3,600 calories. What is the percent decrease in number of calories consumed? Round to the nearest percent
18%
A toy shop purchases 125 identical stuffed animals for a total cost of $312.50 and sells them for $7 each. What is the percent markup?
180%
There are 99 males and 121 females participating in a marathon. What percent of the participants are female?
55%
Annette is surveying people in the city about their interest in a new shopping mall. She found that 180 people, or 37.5% of those surveyed, do not want a new mall. How many people did Annette survey?
480
Sierra left $4.50 as a tip for a waiter. This was 18% of the bill before the tip. How much was her total bill before tip?
$25
A coffee table is on sale for 20% off the original price of $115. If there is a 7.5% sales tax, what is the final price of the coffee table?
$98.90
Hideki buys 2 sweaters for $18 each. He can use one of the following coupons:
• Coupon 1: Buy one, get one 40% off
• Coupon 2: 25% off entire purchase
Which coupon should Hideki use to get a better deal? Explain.
Coupon 2
Darryl deposits $1,500 into a savings account that has a simple interest rate of 2.7%. Lori deposits $1,400 into a savings account that has a simple interest rate of 3.8%. If no other transactions are made, whose account will have more money after 10 years? How much more?
Lori $27
Samson opened a bank account with 1.25% simple interest. The total amount of interest Samson will earn after 20 years is $812.50. How much did Samson deposit when he opened the account?
$3250