Ratios and Proportional Relationships Worksheet #22 Find the u

Transcription

Ratios and Proportional Relationships Worksheet #22 Find the u
Name: ________________________________
Chapter 3: Ratios and Proportional Relationships
Math 7A
Worksheet #22
Find the unit rate.
1. After working out, Jon took his heart rate and
counted 25 beats in 10 seconds. At that rate, how
many beats per minute would that be?
2. In 2 minutes, a copier copied 50 pages. At this rate,
how many pages will the copier copy in 7 minutes?
3. If 3 oz of gold cost $1200, how much would one ounce
cost?
4. Mike sells helium balloons. He charges $9 for 12
balloons. At this rate, what will Mike charge for
50 balloons?
5. If I donate $15 to my friend to run 3 miles in a marathon
fundraiser, at this rate, how much should I give her for running 26
miles?
6. Brian and Steve want to compare prices of their favorite cereals to
determine which is less expensive. The table below shows the price
of each box of cereal and the number of ounces in each box.
BOXES OF CEREAL
Brian’s
Cereal
Steve’s
Cereal
Total
Weight
(in ounces)
Total
Price
(per box)
24 oz.
$3.84
48 oz.
$4.80
Price
(per
ounces)
Part A
Complete the table above by calculating the price per ounce of
each kind of cereal. Show your work.
Part B
Whose cereal is less expensive and by how much?
Answer: