Level 2
The mass of a tub and a packet of flour is 3100 g. The mass of the same tub and 4 similar packets of flour is 9 kg 340 g.
  1. What is the mass of a packet of flour?
  2. What is the mass of the tub?
Give your answers in kg and g.
4 m
Level 3
A television and 4 speakers cost $520. The same television and 2 such speakers cost $400. Find the cost of the speaker.
4 m
Level 3
The mass of a container and 2 metal balls is 2 kg 100 g. The mass of the same container and 5 similar metal balls is 3 kg 750 g.
  1. What is the mass of each metal ball in g?
  2. What is the mass of the container in kg?
4 m
Level 3
2 dictionaries and 2 exercise books cost $50. 1 dictionary and 2 exercise books cost $28. Find the cost of 1 exercise book.
4 m
Level 2
Given that

A + A + B = 4000
A + B = 2350,
what is A + B + B?
4 m