Ratios
Write the ratio of 6 girls to 8 boys in three different ways.
3 to 4, 3:4, 3/4
If Mimi drives 450 miles in 9 hours, what is her rate (speed per hour)?
What is 50 miles per hour
2/3 and 4/6
Yes, proportional, 2 x 6 = 12, 3 x 4 = 12
Solve for x. x/6 = 2/3
What is 4
Anna earns $12 in 3 hours. How much does she make in 5 hours?
What is $20
There are 10 limes and 6 lemons in a dish. Margaret takes two lemons for her water. What is the ratio of limes to lemons now?
5/2
If James types 120 words per 3 minutes, what is his rate of typing?
What is 40 words per minute
Are 1/6 and 2/7 proportional?
Not Proportional, 1 x 7 = 7 and 2 x 6 = 12
Solve for x. x/4 = 12/16
What is 3
Which of the following are equivalent ratios: 1 to 3, 4:9, 5/15, 7 to 28
1 to 3 and 5/15
If 10 bags of Hot Cheetos cost $3.50, then how much does 1 cost?
What is $0.35
Are 6/8 and 9/12 proportional?
Yes proportional, 6 x 12 = 72, and 9 x 8 = 72
Solve for x. x/6 = 48/72
What is 4
There are 48 marbles in a jar, 20 of which are red. The number of blue marbles is half the number of red, and the rest are green. What is the ratio of blue to green marbles?
5/9
Which is the better deal $20 for 5 t-shirts or $24 for 8 t-shirts (must show price per shirt for each)
What is $24 for 8 t-shirts (rate of $3 per shirt)
Are 5/100 and 4/80 proportional? (prove by cross multiplication)
Yes proportional, 5 x 8 = 400, 10 x 4 = 400
Solve for x. 8/10 = 20/x
What is 25
Julia texts 60 words in 16 seconds, then she texts 45 words in how many seconds?
What is 12 seconds
There are 70 students in 5th grade. The ratio of boys to girls is 3:4. How many boys are in 5th grade?
30
Annabelle completed 32 questions in 4 minutes, and Collin completed 48 questions in 8 minutes. Who is working slower?
Collin (6 questions per minute)
18/30 and 21/70
Not proportional, 12 x 10 = 120, 20 x 3 = 60
Solve for x. 12/32 = 15/x
What is 40.
Ms. Curtis studies 30 hours for 4 tests, and studies 75 hours for how many tests?
10 tests.