Question

A recent survey found that the ages of work in a factory are distributed as follows.
Age in years | 20-29,30-39,40-49,50-59 ,60 above.
Number of workers| 39,27,86,46,3.
●46 years or more.
●under 40 years.
●under 60 but over 39 years.

Answer 1

Step-by-step explanation:

20-29=-1,30-39=-1,40-49=-1,50-59=-1,60

-1-1-1-1+60

= -2-2+60

= -4+60

=55