SOLUTION: There are 4 black and 4 white marbles in a box. How many white marbles would you take out of the box so that 2/3 of the remaining marbles would be black?

Question 554069: There are 4 black and 4 white marbles in a box. How many white marbles would you take out of the box so that 2/3 of the remaining marbles would be black?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of white marbles to be removed
given:
2/3 of the remaining marbles are black
That means 1/3 must be white

If you remove 2 white marbles, then the
black ones are 4/( 4 + 2 ) = 2/3 of the
remaining marbles
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