Question
PSLE
At first, a container contained 74 blue balls and some white beads. After some blue balls were removed, 710 of the balls were white. After 18 black balls were added to the container and now, 713 of the beads were white. What was the number of blue balls removed?
2 m

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PSLE
At first, a container contained 74 blue balls and some white beads. After some blue balls were removed, 710 of the balls were white. After 18 black balls were added to the container and now, 713 of the beads were white. What was the number of blue balls removed?