Ratios And Rates Worksheet - Chapter 3 Page 29
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383.6
Using Equivalent Ratios
to Solve Problems
YOU WILL NEED
•
a calculator
Solve rate and ratio problems using proportions and
ratio tables.
LEARN ABOUT
the Math
Allison and Nikita sorted their CD collections. The three-term ratio of
rap CDs to pop CDs to rock CDs is 4 : 6 : 8. They have 63 pop CDs.
How many rock CDs and rap CDs do they have?
■
Why can you solve 8 : 6
: 63 to figure out the number of
A.
rock CDs?
Why can you replace the ratio 8 : 6 with the ratio
B.
■
8
63 : 6
63 and replace the ratio
: 63 with the ratio
■
6
: 6
63?
C.
Why can you write the proportion in part A as
■
8
63 : 6
63
6
: 6
63?
D.
The second terms of the ratios in part C are equal. What does
that tell you about the first terms? Explain how you know.
130
NEL
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