HELP! SHOW ALL WORK AND EXPLAIN. :P

♥It says that he adds 12$ each week, and by the end of 3 weeks he had 60. Well if you do 12*3
And that =36.
But as you can see its not 60 so we have to find out how much money he had in there before.
He had 24$ in there before he started doing this.
You can find this by doing 36+x=60 and 36+24=60.
Now if you do 12*15
You get 180.
Now add the 24 dollars he already had in there.
180+24=204
He had 204$ at the end of wk.15
♥Hope this helps!♥

12x3=36 This means that Gary already has money in the bank. So if u do 60-36 you get 24. If u then do 12x15 you get 180 Then u need to add the 24 on 180+24= 204 The answer is to £204