Ratios
Richard has 5 comedy, 6 drama, and 2 music videos in his collection. What is the ratio of music to comedy?
2:5, 2/5, or 2 to 5
A unit rate has what as the 2nd number (denominator)?
1
Solve
5/6 = x/24
x=20
Write 9% as a decimal
0.09
Is tax added to or subtracted from the original cost?
added
Rita has 7 leg workouts, 3 arm workouts, and 2 full body workouts saved. What is the ratio of arm workouts to total workouts?
3 to 12, 3:12, or 3/12
(simplifies 1:4)
If Jane drives 120 miles in 2.5 hours, what is her speed for one hour?
48 miles per hour
Solve
8/x = 12/3
x=2
Is a discount added to or subtracted from the original price?
subtracted
Write 8/9 as a percent
88.8% or 89%
A school policy says that for a field trip, there must be 1 chaperone for every 8 students. If 104 students are going, is 12 chaperones enough?
No, they need 13
If 40 ounces of ketchup costs $2.89, what is the cost per ounce?
$0.07 (7 cents) per ounce
A recipe calls for 4 tbsp cocoa mix to make an 8 oz serving. How much cocoa is needed for 15 oz serving?
7.5 tbsp
What is 55% of 218?
119.9
If James made 17 of his last 20 free throws, what percent did he make?
85%
Write a ratio that is equivalent to the ratio 10:22
Lots of possible answers including 20:44, 5:11, etc
Which is the better deal: 5 videos for $29.50 or 3 videos for $17.25?
3 videos
A 3 ft mailbox casts a 1.8 ft long shadow. Nearby, a streetlamp casts a 12 ft shadow. How tall is the streetlamp?
20 ft tall
93 is 30% of what number?
310
A sweater is marked 40% off the original price of $31.75. What is the price of the sweater after the discount?
$19.05
What are the 3 forms to write a ratio in?
A:B, a to b, a over b
Mike can buy a 6-pack of t-shirts for $7.20 or a 10-pack for $11.80. Which is the better deal?
the 10-pack
Jenny takes 9 minutes to swim 12 laps and 12 minutes to swim 16 laps. How long do you think it will take her to swim 14 laps?
10.5 minutes
If you tip 15% and your bill was $28.68, what is your total cost?
$32.98
How much sales tax will you pay if the rate is 6% and the book you buy is $17.89?
$1.07