Yi Min started an engineering firm called Min Engineering. He began operations and completed seven transactions in May, which included his initial investment of $18,000 cash. After those seven transactions, the ledger included the following accounts with normal balances.

Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . $37,600
Office supplies . . . . . . . . . . . . . . . . . . . . . . . 890
Prepaid insurance . . . . . . . . . . . . . . . . . .  4,600
Office equipment . . . . . . . . . . . . . . . . . . 12,900
Accounts payable . . . . . . . . . . . . . . . . . .12,900
Y. Min, Capital . . . . . . . . . . . . . . . . . . . . .18,000
Y. Min, Withdrawals . . . . . . . . . . . . . . . . .3,370
Engineering fees earned . . . . . . . . . . . .36,000
Rent expense . . . . . . . . . . . . . . . . . . . . . . 7,540

Required
1. Prepare a trial balance for this business as of the end of May.
2. The following seven transactions produced the account balances shown above.
a. Y. Min invested $18,000 cash in the business.
b. Paid $7,540 cash for monthly rent expense for May.
c. Paid $4,600 cash for this year’s insurance premium beginning immediately.
d. Purchased office supplies for $890 cash.
e. Purchased $12,900 of office equipment on credit (with accounts payable).
f. Received $36,000 cash for engineering services provided in May.
g. Y. Min withdrew $3,370 cash for personal use.
Prepare a Cash T-account, enter the cash effects (if any) of each transaction, and compute the ending Cash balance (code each entry in the T-account with one of the transaction codes a through g).