Level 3 The mass of a container when it is 17 full is 6.03 kg. The mass of a container when it is half full is 11.53 kg. What is the mass of the container when it is empty??
Level 2
The total mass of 2 boxes is 3 kg 696 g. One of the boxes weighs 108 g more than the other. What is the mass of the lighter box?
(Give the answer in kilograms and grams.)
Level 3
Shop X had 68 kg of salt and Shop Y had 128 kg of salt. After both shops sold an equal amount of salt, Shop X had 25 as much salt as Shop Y. How much salt did both shops sell?