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Quantitative Aptitude

Probability

If a person i...

Question

If a person is selected at random, find the probability that the person is under 60 but over 39 years.

A

0.25

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B

0.50

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C

0.66

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D

0.75

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Solution

The correct option is C $0.66$
Total no. of workers $= 38 + 27 + 86 + 48 + 3 = 202$
Number of worker's age between $39 - 60 = 86 + 48 + 3 = 137$
$P (E) = \frac{137}{202} = 0.675$

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$\begin{matrix} Age(in years) & 20 - 29 & 30 - 39 & 40 - 49 & 50 - 59 & 60 and above Number of & 38 & 27 & 86 & 46 & 3 workers \end{matrix}$

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