Question
32 pens are there in a box where 14 are red pens,
‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blue pen is 0.25. Find the ratio of the number of blue pens and black pens.Solution
Probability of getting a blue pen , => p/32 = 1/4 => p = 8 So, number of black pens = 32 – 14 – 8 = 10 Required ratio = 8 : 10 = 4:5
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