Level 3
The total mass of a robot, a Lego set and a toy car is 3 kg 33 g. The Lego set is twice as heavy as the robot. The toy car is thrice as heavy as the Lego set. Find the total mass of the robot and the toy car. Give the answer in kg and g.
Level 3
Merlin has some money to buy some markers. He will have $3 if he buys 4 markers. However, he will need $2 more if he wants to buy 5 markers. How much money does each marker cost?
Level 3
Mr Kim wanted to buy some rice. He will have $12 left if he buys 3 kg of rice. However, he will need $4 more to buy 4 kg of rice. What is the cost of 1 kg of rice?