Answer each of the following independent questions concerning supplies and the adjustment for supplies.

• a.The balance in the supplies account, before adjustment at the end of the year, is $4,000. What is the amount of the adjustment if the amount of supplies on hand at the end of the year is $1,750?
• b.The supplies account has a balance of $1,100, and the supplies expense account has a balance of $3,100 at December 31, 2013. If 2013 was the first year of operations, what was the amount of supplies purchased during the year?