Abusiness makes toy buses and toy lorries. the following table is used in calculating the cost of manufacturing each toy.
labour (hours) wood (blocks) paint (tins)
bus 6 4 3 lorry 3 4 2
labour costs $8 per hour, wood costs $1 per block and paint costs $2 per tin.
a. b.
6 4 3 8
it is given that a    , b  1 and cab.
3 4 2  2

evaluate c and explain what the numbers in your answer represent in complete sentences. in addition, d  100 200.evaluate dc and explain what your answer represents.