Question
PSLE
At first, a box contained 11 grey balls and some silver beads. After some grey balls were added, 710 of the balls were silver. After 45 blue balls were added to the box and now, 713 of the beads were silver. What was the number of grey balls added?
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PSLE
At first, a box contained 11 grey balls and some silver beads. After some grey balls were added, 710 of the balls were silver. After 45 blue balls were added to the box and now, 713 of the beads were silver. What was the number of grey balls added?