Jelinek Sports received a cheque for $1867.25 in partial payment of an invoice owed by The Ski

Question:

Jelinek Sports received a cheque for $1867.25 in partial payment of an invoice owed by The Ski Shop. The invoice was for $5325 with terms 3/20 E.O.M. dated September 15, and the cheque was received on October 18.
(a) By how much should Jelinek Sports credit the account of The Ski Shop?
(b) How much does The Ski Shop still owe Jeline

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