Question 20 A recent survey found that ages of workers in a factory as follows: Age(in years)20−2930−3940−4950−5960 and aboveNumber of382786463workers If a person is selected at random, find the probability that the person is: (i) 40 years or more. (ii) Under 40 years. (iii) Having age from 30 - 39 years. (iv) Under 60 but over 39 years.

Question 20 A recent survey found that ages of workers in a factory as

1.	Question 20 A recent survey found that ages of workers in a factory as follows: Age(in years)20−2930−3940−4950−5960 and aboveNumber of382786463workers If a person is selected at random, find the probability that the person is: (i) 40 years or more. (ii) Under 40 years. (iii) Having age from 30 - 39 years. (iv) Under 60 but over 39 years.
Answer» Question 20 A recent survey found that ages of workers in a factory as follows: $\begin{matrix} Age(in years) & 20 - 29 & 30 - 39 & 40 - 49 & 50 - 59 & 60 and above Number of & 38 & 27 & 86 & 46 & 3 workers \end{matrix}$ If a person is selected at random, find the probability that the person is: (i) 40 years or more. (ii) Under 40 years. (iii) Having age from 30 - 39 years. (iv) Under 60 but over 39 years.