Question
PSLE
At first, a box contained 9 white balls and some brown beads. After some white balls were added, 710 of the balls were brown. After 36 grey balls were added to the box and now, 713 of the beads were brown. What was the number of white balls added?
2 m

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PSLE
At first, a box contained 9 white balls and some brown beads. After some white balls were added, 710 of the balls were brown. After 36 grey balls were added to the box and now, 713 of the beads were brown. What was the number of white balls added?