a) An invoice dated 23 April 2017 was received by Anna Scarves for the purchase of 120 shawls at RM10 each. The owner was offered trade discounts of 10% and 8% and cash discount terms of 5/15, 3/20 and n/30. Find: i) the single discount equivalent to the trade discounts given. (3 marks) ii) the last day to receive the 3% cash discount. (2 marks) iii) the amount due if the owner pays the invoice on 10 May 2017. (4 marks)