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Alton studies the growth patterns of sassafras trees and yellow birch trees in the 88 counties in Ohio. He finds that
- approximately 27% of the counties have both species of trees, - yellow birch only grows in 24 counties, and - 1 out of 11 counties grows neither species Complete the table to shown the relationship between the number of counties where sassafras trees and yellow birch trees grow. |
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Since yellow birch trees only grow in 24 counties, the first row, third column can be populated with 24. |
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Since the total counties is 88, the second row, third column can be populated with 64. |
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Since 27% of the counties grow both species of trees, the first row / first column can be populated with 24. This number is found by taking 27% of 88. |
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The first row / second column can be populated with 0, since 24 + 0 = 24. |
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Since 1 out of 11 counties grow neither species, the second row / second column can be populated with 8. 88 x 1/11 = 8. |
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The rest is just finishing the addition and subtraction throughout the rows and columns. 0 + 8 = 8 for the third row / second column 88 - 8 = 80 for the third row / first column 80 - 24 = 56 for the second row / first column |
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