To find the cost of proportionality, we need to determine the rate at which Sarah earns money per hour worked.
The cost of proportionality can be calculated using the formula:
Cost of proportionality = Total amount earned / Total number of hours worked
In this case, Sarah earns $320 for working 40 hours. Plugging these values into the formula, we get:
Cost of proportionality = $320 / 40 hours
Simplifying the expression, we find:
Cost of proportionality = $8/hour
Therefore, the cost of proportionality is $8 per hour.
The amount of money that Sarah earns
directly with the number of hours worked if she earns $320 for working 40 hours determine the cost of proportionality
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