Wally takes $40 out of his bank account every week. if he had a balance of $100 to begin with, what is his balance after 4 weeks?

Step-by-step explanation:

Wally takes out $40 dollars out of his bank account every week, then we know that he has $100 dollars to begin with,

Meaning that for 4 weeks, we have to $40 dollars out of $100.

   :

$100 - $40

==> $60

   :

$60 - $40

==> $20

   :

$20 - $40

==> -$60

   :

-$60 - $40

==> -$100

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)