Question
The number of red and blue marbles in a box were in the
ratio 6:11. There were 100 more blue marbles than red marbles. Later, 15 red and 25 blue marbles were taken out. What is the ratio of remaining blue marbles to red marbles?Solution
ATQ,
Let the original number of red and blue marbles be '6x' and '11x', respectively
According to the question,
11x - 6x = 100
So, x = 100 ÷ 5 = 20
So, original number of red and blue marbles = 120 and 220, respectively
Required ratio = (220 - 25):(120 - 15) = 195:105 = 13:7
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