On May 25, after the transactions had been posted, Adams discovered that the following entry contains an error. The cash received represents a collection on account, rather than new service fees. 20--
May 23 Cash 101 1,270
Service Fees 401 1,270
Received cash for services previously earned
Correct the error in the general journal using the correcting entry method. If an amount box does not require an entry, leave it blank.

With the correcting entry method, the wrongly posted account will transfer the amount that was to be posted elsewhere to the place it was to be posted in. In this case the posting was to be to Accounts Receivable not Service fees so:

Date                   Account Title                                     Debit                  Credit

May 23              Service Fees                                   $1,270

                          Accounts Receivable                                                 $1,270

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.