Calculate the discounts manually when appropriate.

HARDA Fashion sells ready-to-wear fashion clothes to teenagers. The company has a 20-store
chain concentrated in the north-eastern part of the United States of America. Each store has
the experienced full-time staff consist of a manager and an assistant manager. The full-time
staff is paid a fixed salary. The full-time staff is assisted with a cashier and a sales assistant
who have comparatively less experience. The cashier and sales assistant are paid hourly
wages plus the commission based on the volume of sales. HARDA Fashion uses
unsophisticated cash registered with four-parts sales invoice to record each financial
transaction. These sales invoices for the sales transaction irrespective of the payment type.
The record-keeping starts with the sales assistant on the sales floor. The sales assistant fills the
sales invoices manually by providing the following information:
1. Records his or her employee number.
2. Enters the transaction details including clothes item number, description, quantity,
and the unit price.
3. Totals the sales invoice.
4. Calculates the discounts manually when appropriate.
5. Calculates the sales tax.
6. Finalise the sales invoice after calculating the grand total.
The sales assistant then forwards the sale invoice to the cashier and keeps one copy in the
sales book.
The cashier reviews this sales invoice and enters in the cash register. The cash register
mechanically validates the invoice, automatically assigning a consecutive number to the
transaction. The cashier is also responsible for getting credit approval on charge sales and
approving sales paid by cheque. The cashier gives (1) one copy of the invoice to the customer,
(2) retains the second copy as a store copy, and (3) the third for a bankcard, if a deposit is
needed. Returns are handled in exactly the reverse manner, with the cashier issuing a return

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