8. The
average weekly salary per head of the entire staff of a factory consisting of supervisors and the
laborers is Rs 60.The average salary per head of the supervisors is Rs 400 and
that of the laborers is Rs 56.Given that
the
number of supervisors is 12.Find the number of
laborers
in the factory.
Solution:
Average
salary of laborer Rs 56 Average salary
of
supervisors
Rs 400
Average salary of entire staff Rs
60
340 4
Number
of laborer / Number of Supervisors = 340 / 4=85/1
Thus,if
the number of supervisors is 1,number of
laborers
=85.
Therefore
if the number of supervisors is 12 number of
laborers
85*12=1020.
