The average salary per worker of the entire staff of a polythene bag manufacturing unit including machine operator and labours is ₹7500. The average salary per head of the machine operator is ₹25000 and that of labours is ₹6000. What is the number of workers in the unit if there are 3 machine operators ?
Answer & explanation
Correct answer: option 3
The correct answer is option (3) : 38
Given c= ₹6000
d= ₹25000
m= ₹7500
Let no. of labours be x
$\frac{x}{\text{no. of machine operator}}=\frac{d-m}{m-c}$
$\frac{x}{3}=\frac{17500}{1500}$
$x= 35$
∴Total no. of workers $= 35+3= 38$