Question
PSLE
The average mass of 3 boys, David, Adam, Bryan, is 44 kg. David is heavier than Adam by 10 kg. The total mass of David and Adam is the same as the mass of Bryan. What is the mass of David?
2 m

Click button first when a symbol is required. X

PSLE
The average mass of 3 boys, David, Adam, Bryan, is 44 kg. David is heavier than Adam by 10 kg. The total mass of David and Adam is the same as the mass of Bryan. What is the mass of David?