The average weekly salary per head of all employees (supervisors and labourers) is Rs 100. The average weekly salary per head of all the supervisors is Rs 600, while the average weekly salary per head of all the labourers is Rs 75. Find out the number of supervisors in the factory if there are 840 labourers in it.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 42

The required ratio is 500:25, or 20:1
$\frac{N u m b e r o f l a b o u r e r s}{N u m b e r o f s u p e r v i s o r s} = \frac{20}{1} \Rightarrow \frac{840}{N u m b e r o f s u p e r v i s o r s} = \frac{20}{1}$
$∴$ Number of supervisors = $\frac{840}{20} = 42$

Suggest Corrections

Similar questions

Q. Consider a small unit of a factory where there are

5

employees, a supervisor and four labourers. The labourers, draw a salary of

R s . 9, 000

per month each while the supervisor get

R s . 23, 000

per month. Calculate median salary of this unit of factory.

Q. The average salary per head of all the workers in a workshop is 1850. If the average salary per head of 7 technicians is Rs. 1000 and the average salary per head of the rest is Rs. 780, find out the total number of workers in the workshop.

There are 1000 labourers in a factory. The factory supervisor wants to find out the typical productivity of a worker. Which measure of central tendency should he use?

Q. The average salary of nine workers in a factory is Rs. 28000 per month. If the salary of the manager is Rs 50000 per month, find the average salary paid to all the employees.

There are 216 workers in a factory out of which 75 are labourers. What would be the central angle of the sector representing labourers in a pie chart?

Join BYJU'S Learning Program

The correct option is B 42 The required ratio is 500:25, or 20:1 Number of labourersNumber of supervisors=201⇒840Number of supervisors=201 ∴ Number of supervisors =84020=42

The correct option is B 42

The required ratio is 500:25, or 20:1
$\frac{N u m b e r o f l a b o u r e r s}{N u m b e r o f s u p e r v i s o r s} = \frac{20}{1} \Rightarrow \frac{840}{N u m b e r o f s u p e r v i s o r s} = \frac{20}{1}$
$∴$ Number of supervisors = $\frac{840}{20} = 42$