Use your algebraic equation to calculate the number of weeks you have been spending money of there is $60 left.
m=240-30w
m being the money left over
w being weeks passed
To calculate the number of weeks spent when there is $60 left, we can set m equal to 60 and solve for w in the equation:
60 = 240 - 30w
Subtracting 240 from both sides of the equation:
-180 = -30w
Dividing both sides by -30 to isolate w:
w = (-180) / (-30)
Simplifying:
w = 6
Therefore, if there is $60 left, it means that 6 weeks have been spent.