The data below shows the number of workers
employed in the various sections of a construction
company in Lagos.
Carpenters 24 Labourers 27
Plumbers 12 Plasterers 15
Painters 9 Messengers 3
Bricklayers 18
If a worker is retrenched, what is the probability that he is a plumber or plasterer.
1/27
1/9
5/36
1/4
3/4
Correct answer is D
No explanation has been provided for this answer.