Explanation:
With the help of Preparing Suppllies Account we got the answer
Supplies Account
jan 1 By balance b/d 1,500
To Cash (expenses) Bal 9,500 By Purchase 40,000
To Bank (paid ) 30,000
Dec 31 To bal c/d 2,000
So by preparing Supplies Account we got the balance amount of Expenses paid to supplies are 9,500 $