Question
PSLE
At first, a box contained 55 yellow marbles and some silver beads. After some yellow marbles were removed, 35 of the marbles were silver. After 39 blue marbles were added to the box and now, 38 of the beads were silver. What was the number of yellow marbles removed?
2 m

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PSLE
At first, a box contained 55 yellow marbles and some silver beads. After some yellow marbles were removed, 35 of the marbles were silver. After 39 blue marbles were added to the box and now, 38 of the beads were silver. What was the number of yellow marbles removed?