SOLUTION: Benito has 20 small balls of different colours: yellow, green, blue and black. 17 of the balls are not green, 5 are black, 12 are not yellow. How many blue balls does Benito have?
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Question 302061: Benito has 20 small balls of different colours: yellow, green, blue and black. 17 of the balls are not green, 5 are black, 12 are not yellow. How many blue balls does Benito have?
A) 3 B) 4 C) 5 D) 8 E) 15
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
"17 of the balls are not green" ___ so 3 are green
"12 are not yellow" ___ so 8 are yellow
"5 are black"
so 16 are NOT blue
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