Answer:
28 hours
Explanation:
To calculate how many hours Cole must work to earn $700, we must first calculate how much he makes per hour.
This can be done by taking the total amount he earned and dividing by the number of hours:
$500 / 20 hours = $25 an hour
Since we now know how much he makes an hour, we can determine how many hours it takes to earn $700 by using a similar equation to the one above:
Total Money / Total Hours = $ an hour
$700 / Total Hours = $25 an hour
It can be represented algebraically as:
700 / x = 25
Then, solve for x:
(700 / x) * x = (25) * x
700 = 25x
(700) / 25 = (25x) / 25
28 = x
28 hours