2025 CCHY PRELIMS P1 Q15

2025 CCHY PRELIMS P1 Q15

Secondary 4
3 marks

Tom has \(46\) blue and \(29\) red balls. He wants to use all the balls to fill a ball pit. He wants at least \(70\%\) of the balls to be blue. Find the smallest number of extra blue balls he needs to add to his ball collection.[3]

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Answer:\(22\)

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