Question
PSLE
Abi had a box of blue balls and brown balls in the ratio 17 : 7. She removed an equal number of blue balls and brown balls from the box. The ratio of the number of blue balls and brown balls left in the box became 7 : 2. What percentage of the balls were left in the box?
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PSLE
Abi had a box of blue balls and brown balls in the ratio 17 : 7. She removed an equal number of blue balls and brown balls from the box. The ratio of the number of blue balls and brown balls left in the box became 7 : 2. What percentage of the balls were left in the box?