Question
PSLE
At first, a box contained 71 white marbles and some black beads. After some white marbles were removed, 47 of the marbles were black. After 24 pink marbles were added to the box and now, 49 of the beads were black. What was the number of white marbles removed?
2 m

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PSLE
At first, a box contained 71 white marbles and some black beads. After some white marbles were removed, 47 of the marbles were black. After 24 pink marbles were added to the box and now, 49 of the beads were black. What was the number of white marbles removed?