Michael Has 30 Balls,yellow Blue Green Black.25 Balls Are No…

michael has 30 balls,yellow blue green black.25 balls are not yellow,8 are black,16 are not green how many blu balls are there

Let:
t = total no. of balls
y = no. of yellow balls
b = no. of black balls
g = no. of green balls
B = no. of blue balls

[tex]y = t – 25 = 30 – 25 = 5 \\ b = 8 \\ g = t – 16 = 30 – 16 = 14 \\ t = y + b + g + B \\ 30 = 5 + 8 + 14 + B \\ B = 3[/tex]

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