Question

in a certain factory there are 10 officers, 60 clerks and 400 workers.Their average salary are 627,230 and 120 respectively. Find the average salary of the employees working together

Answer 1

The average salary of 10 officers is 627. So the total salary of 10 0fficers will be $(10*627)=6270$

The average salary of 60 clerks is 230, so their total salary will be $(60*230)=13800$

The average salary of 400 workers is 120, so their total salary will be $(400*120)=48000$

Now, the total salary of all the employees will be $(6270+13800+48000)=68070$

And the total number of employees altogether is $(10+60+400)=470$

So, the average salary of all the employee working together will be $(68070/470)\approx144.83$