Question
There are 55 red balls and 21 blue balls in a basket. 511 of the red balls are blemished. All the blue balls are not blemished. How many more red balls than blue balls are not blemished?
4 m

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There are 55 red balls and 21 blue balls in a basket. 511 of the red balls are blemished. All the blue balls are not blemished. How many more red balls than blue balls are not blemished?