Level 3
A tank containing some water and 7 identical stones has a mass of 1 kg 235 g. When the 7 stones were taken out, the mass of the tank of water became 759 g. Find the mass of each stone. (Give the answer in grams.)
4 m
Level 3
The total mass of 2 sacks of rice and 3 bags of sugar was 38 kg. Each bag of sugar was 4 kg lighter than each sack of rice.
  1. What was the mass of 1 sack of rice?
  2. What was the mass of 1 bag of sugar?
4 m
Level 3
One eating house bought 168 kg of beef and mutton. 13 of the beef and 45 of the mutton were sold. The amount of mutton sold was 12 kg more than the amount of beef sold.
  1. How much mutton did the eating house buy?
  2. How much beef did the eating house buy?
4 m
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?
4 m
Level 3
The total mass of 2 shells and 6 rings is 24.8 kg. The total mass of 1 shell and 2 rings is 6.8 kg. What is the mass of each ring?
4 m
Level 3
A box containing 3 similar mugs weighs 1.2 kg. The same box and 2 of the mugs weigh 980 g. Find the mass of the empty box.
4 m
Level 3
The total weight of a teddy bear and a doll is 3.5 kg. The total weight of a teddy bear and a toy car is 4.8 kg. If the total weight of a toy car and a doll is 5.65 kg, find the total weight of a teddy bear, a doll and a toy car.
4 m
Level 3
There are 48 oranges in a box. Each orange weighs 150 grams. Find the total mass of the oranges, in kilograms, in
  1. 1 box.
  2. 5 such boxes.
4 m
Level 3
The total mass of Pierre and Rael is 46.6 kg. The total mass of Rael and Mark is 59 kg. If the total mass of Pierre and Mark is 56 kg, find the mass of Mark.
4 m
Level 3
Fion used 47 of the flour to bake a cake. She used 14 of the remaining flour to bake some muffins. Given that Fion was left with 450 g of flour, how much flour did she have at first?
4 m