Carson Elementary And Intermediate Algebra 3e Page 4
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Carson Elementary and Intermediate Algebra 3e
Section 3.2
Example 3
Heidi left an 11% tip of $1.65
With word problems such as this one, it is sometimes
for a meal. What was the cost
more helpful to use the second proportion:
of the mean before the tip?
11
. 1
65
1.65 is the part
11 percent
100
x
Unknown whole
Stays 100
Now use the cross products to solve:
11
x
165
x
15
Therefore, the meal cost $15. The total cost, including the
tip, was $16.65.
C.Stewart 2011
page 4
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