Level 3
A bag of beans and a packet of sugar have a mass of 4.25 kg. 3 similar bags of beans and 2 similar packets of sugar weigh 11 kg. What is the mass of 1 bag of beans?
Level 3 The cost of 4 paperbacks and 2 comics is $22.40. The cost of 2 paperbacks and 2 comics is $14.40. What is the cost of 6 paperbacks and 6 comics?