You are the audit senior on the audit of Marsa Ltd, a large manufacturing company, for the year ended 30 June 2020. It is now 16 July 2020 and you are reviewing the audit working papers prepared by the audit assistant, Trena Berk. You notice the following matters:

(i) As part of her work on subsequent events since balance date, Trena noted that there were a large number of returns in July of product XLP. However, as this product was first sold in June and represented only 1 per cent of sales for the year, she concluded that the amount was immaterial and that no further work was necessary.

(ii) Trena selected 20 invoices to test the control that the salesclerk checks that the prices agree with the authorised price list. She found three instances where the salesclerk had not signed the prices checked box on the invoice. The sales manager explained that the salesclerk always checks the prices, but sometimes forgets to sign the box. As the prices on all the invoices agreed with the authorised price list, Trena concluded that the control was operating satisfactorily.

Required:

For each of the two scenarios presented above, indicate whether you believe that sufficient appropriate audit evidence was obtained to support the conclusions reached. Give reasons for your decision.