Question

Find the average salary of a worker in a factory of $50$ workers, where the average salary of $22$ of them is $₹150$ and that of rest is $₹140.$

Answer 1

To find the average salary we need to find total salary of $22$ person then total salary of rest person.

So Total Salary of $22$ person $=averagesalary\times totalperson$

$$\begin{gathered} =150\times 22 \\ =3300 \end{gathered}$$

Rest person are $50-22=28$

Now we calculate total salary of rest $28$ person

Total Salary of $28$ person $=averagesalary\times totalperson$

$$\begin{gathered} =140\times 28 \\ =3920 \end{gathered}$$

Hence the total salary of $50$ person $=3300+3920=7220$

$\therefore$The average salary of $50$ person $=\frac{Totalsalary}{No.ofperson}$

$$\begin{gathered} =\frac{7220}{50} \\ =144.4 \end{gathered}$$

Hence the average salary is $₹144.4$