Question
PSLE
The mass of a container with 41 identical marbles is 777 g. When 21 of the marbles are sold, the mass of the container with the remaining marbles is 420 g. What is the mass of each marble?
2 m

Click button first when a symbol is required. X

PSLE
The mass of a container with 41 identical marbles is 777 g. When 21 of the marbles are sold, the mass of the container with the remaining marbles is 420 g. What is the mass of each marble?