Answer :
She spend $142 each month.
You do 4.85 x 20 which equals 97. Next you do 2.25 x 20 and you get 45. Then you add 97 and 45 which equals to 142.
You do 4.85 x 20 which equals 97. Next you do 2.25 x 20 and you get 45. Then you add 97 and 45 which equals to 142.