Ratios And Rates Worksheet - Chapter 3 Page 22
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38Reflecting
equivalent rate
Why was your answer to part D an equivalent rate to
E.
a rate that describes
56 s/100 m?
the same comparison
as another rate;
How are rates like ratios? How are they different?
F.
e.g., 2 for $4 is
equivalent to 4 for $8.
WORK WITH
the Math
Example 1
Using a proportion to solve a rate problem
At last year’s school picnic, the helpers served about 160 L of lemonade
to 250 people. About how much lemonade did each person have?
Aaron’s Solution
I want to know the amount of lemonade
The rate is 160 L/250 people.
each person had: that is a unit rate. I used
the information to write a proportion.
L
lemonade =
160 L
=
people
250 people
1 person
÷ 250
I realized that I had to divide 250 by 250 to
160 ÷ 250 = 0.64
,
,
get 1, so I had to divide 160 by 250. I used
Each person could have had 0.64 L
or 640 mL
my calculator.
of lemonade.
123
NEL
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