A retailer receives an invoice dated 21 February 2019 worth of RM4,350 of goods that included a prepaid freight cost of RM30. The invoice was offered trade discounts of 8% and 5% and cash discount terms of 4/15,2/20,n/30. (a) Find the last date to settle the invoice. (b) Assume the retailer paid RM400 on 7 March 2019 and the balance on 14 March 2019. Find the amount of the balance that was paid.