Question

an arborist examined trees in an orchard to see if they were infected with a virus. the arborist counted 22 infected trees and 418 healthy trees. what percentage of the trees in the orchard were infected? write your answer using a percent sign (%).

Explanation:

Step1: Calculate the total number of trees

The total number of trees is the sum of infected and healthy trees. So, \(22 + 418=440\) trees.

Step2: Calculate the percentage of infected trees

The formula for percentage is \(\frac{\text{number of infected trees}}{\text{total number of trees}}\times100\%\). Substitute the values: \(\frac{22}{440}\times 100\%\)

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Answer:

\(5\%\)