Questions 13 and 14 A building materials merchant has to deliver twelve orders of bricks to a town several miles away. The orders have the following weights, in tonnes. Order A B C D Weight 6 5 9 8 L E F G H 4 7 8 4 I J K 3 5 9 7 The orders are to be dispatched in lorries, each of which can carry no more than 19 tonnes, and with each order packaged at source (so that no order can be split between vehicles). It is required to find the minimum number of vehicles needed. Q13 What answer is given by the first-fit packing method? Q14 What answer is given by the first-fit decreasing method? Options for Questions 13 and 14 A 3 B 4 C 5 D 6 E7 F 8