George has $75 saved. He know he can make $20 for each lawn (l) he mows. He would like his savings account balance to be at least $500 by the end of the month.
How many lawns will George have to mow to reach his savings goal?
We can start by subtracting George's current savings from his goal savings to find out how much more money he needs to make:
$500 - $75 = $425
We know George can make $20 for each lawn he mows, so we can set up an equation to represent the situation:
20l = 425
To solve for l, we can divide both sides by 20:
l = 21.25
Since George can't mow a fraction of a lawn, we can round up to the nearest integer:
l = 22
Therefore, George will need to mow 22 lawns to reach his savings goal of $500 by the end of the month.