It took Carla 36 minutes to run four miles. Convert this ratio into a unit rate by finding how long it took Carla to run one mile.(1 point)
Responses
19 minutes/mile
one-ninth minutes/mile
9 minutes/mile
9 minutes/mile
19 miles/minute
one-ninth miles/minute
9 miles/minute
The correct unit rate is 9 minutes per mile.
To convert the given ratio into a unit rate, you need to find how long it took Carla to run one mile.
First, you need to divide the total time it took Carla (36 minutes) by the total number of miles she ran (4 miles).
36 minutes / 4 miles = 9 minutes/mile
Therefore, the correct unit rate is 9 minutes/mile.
To convert the given ratio into a unit rate, we need to find how long it took Carla to run one mile.
Given that Carla took 36 minutes to run four miles, we can calculate the time it took her to run one mile by dividing the total time by the distance:
36 minutes รท 4 miles = 9 minutes/mile
Therefore, the unit rate is 9 minutes/mile.
At a used book sale, Miss Chen bought a box of 20 assorted books for $40. What was the cost per book?(1 point)
Responses
2 books/$1.00
2 books/$1.00
$2.00/book
$2.00/book
$0.50/book
$0.50/book
0.5 books/$1.00
To find the cost per book, we need to divide the total cost ($40) by the number of books (20):
$40 / 20 = $2.00/book
Therefore, the cost per book is $2.00/book.
It took Liam 15 minutes to ride his bike three miles. Convert this ratio into a unit rate by finding how long many minutes did he take to travel one mile.(1 point)
Responses
15 minutes/mile
one-fifth minutes/mile
5 minutes/mile
5 minutes/mile
5 miles/minute
5 miles/minute
15 miles/minute
To convert the given ratio into a unit rate, we need to find how many minutes it took Liam to travel one mile.
Given that Liam took 15 minutes to ride three miles, we can calculate the time it took him to travel one mile by dividing the total time by the distance:
15 minutes / 3 miles = 5 minutes/mile
Therefore, the unit rate is 5 minutes/mile.
At Office Mart, a box of 10 ballpoint pens costs $8. What is the unit price?(1 point)
Responses
1.25 pens/$1
1.25 pens/$1
$0.80/pen
$0.80/pen
$1.25/pen
$1.25/pen
0.80 pens/$1
To find the unit price, we need to divide the total cost ($8) by the number of ballpoint pens (10):
$8 / 10 pens = $0.80/pen
Therefore, the unit price is $0.80/pen.
For a Thanksgiving food drive, volunteers packed 50 boxes of food in 20 minutes. How many boxes did they pack per minute?(1 point)
Responses
2.5 minutes/box
2.5 minutes/box
0.4 boxes/minute
0.4 boxes/minute
0.4 minutes/box
0.4 minutes/box
2.5 boxes/minute