You have 90 red and white marbles. You have twice as many red marbles as white marbles. How many white marbles do you have?
Total number of marbles=90
Let the number of white marbles=x
So the number of red marbles be=2x
Because it is given that red marbles are twice..
So Acoording to question..
2x+x=90
3x=90
So x=90/3
=30
So White marbles are x=30
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