Question

4. The average weekly salary per head of the entire staff of a
factory consisting of supervisors and the labourers is Rs 60.
The average salary per head of the supervisors is Rs 400 and
that of the labourers is Rs 56. Find the number of labourers
in the factory​

Answer 1

Answer:

number of the labours in the factory is 1020

Step-by-step explanation:

average weekly salary per head of the entire staff of a factory consisting of supervisors and the labourers x =60

average salary per head of the supervisors a =400

average salary per head of the labors b = 56

average salary of the company

\begin{gathered}60 =\frac{56 \times b +400 \times a} {a+b}\\60a+60b=400a+56b\\4b =340 a\\b =\frac{340 a}{4} \\b= 85 a \\\end{gathered}

60=

a+b

56×b+400×a

60a+60b=400a+56b

4b=340a

b=

4

340a

b=85a

Here number of supervisor is 12

number of the labours in the factory = 85 x 12 =1020

number of the labours in the factory is 1020

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