The median from the following data is

Wages/week (Rs.)	(Rs.) No. of workers	Wages/week	No. of workers
50-59	15	90-99	45
60-69	40	100-109	40
70-79	50	110-119	15
80-89	60

Median 

Median = size of $\left(\frac{N}{2}\right)$item $=\frac{265}{2}=132.5$th item 

Median lies in the class 80–89. But the true limit of the class
is 79.5 – 89.5

Here, $N=265,C=105,f=60,h=10$and $l=79.5$

$\begin{array}{r}\text{ Median }=l+\frac{h}{f}\left(\frac{N}{2}-C\right)\\ =79.5+\frac{10}{60}(132.5-105)=84.08\end{array}$