Question
PSLE
At first, a box contained 71 grey marbles and some pink beads. After some grey marbles were removed, 57 of the marbles were pink. After 55 white marbles were added to the box and now, 512 of the beads were pink. What was the number of grey marbles removed?
2 m

Click button first when a symbol is required. X

PSLE
At first, a box contained 71 grey marbles and some pink beads. After some grey marbles were removed, 57 of the marbles were pink. After 55 white marbles were added to the box and now, 512 of the beads were pink. What was the number of grey marbles removed?