Question
PSLE
A box contained silver balls and yellow balls. 40% of the balls were yellow. After some green balls were added to the box, 22% of the balls were yellow. What percentage of the balls in the box were green?
2 m

Click button first when a symbol is required. X

PSLE
A box contained silver balls and yellow balls. 40% of the balls were yellow. After some green balls were added to the box, 22% of the balls were yellow. What percentage of the balls in the box were green?