Before Champaran Satyagraha, the farmers of Champaran used to follow the 'Panchkathiya' system, whereby five katthas of land in a bigha had to be planted with ___.
The bar graph shows 1 month's sales figures of different brands of washing machines of a certain electronics store in Rs. 1000s. Study the diagram and answer the following questions.
If the sales figures are exclusive of tax then at the rate of 18% tax how much is the tax to be paid (in Rs) on the sales of all the 7 brands of washing machines?