Ratios And Rates Worksheet - Chapter 3 Page 15
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38Example 3
Determining part of a whole
A bag of trail mix has 70 g of raisins for every 30 g of sunflower seeds.
There are no other ingredients. In 500 g of trail mix, how many grams
are raisins?
Misa’s Solution
I used the first two rows of a ratio table to
represent the parts; I added a third row to
represent the whole. I did that since I knew
raisins
70
about the parts for a smaller mixture, but not
sunflower seeds
30
the whole amount for the package.
package
500
The whole for the small mixture was 100 g
(70 g
30 g).
raisins
70
sunflower seeds
30
package
100
500
x 5
I multiplied all the numbers by 5 since I
x 5
wanted a total of 500.
raisins
70
350
sunflower seeds
30
150
package
100
500
x 5
There are 350 g of raisins in the package.
A
Checking
Complete each ratio table.
1.
a)
Boys
2
20
40
3
15
45
Girls
116
Chapter 3
NEL
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