Branding

The bar chart given below shows the sales (in '000 units) of 4 mobile brands for 3 years. In 2017 the sales of each brand increased by the same percentage as it did in the year 2016. What will be the approximate average sales (in units) of mobiles per brand in year 2017?

To check the quality of two brands of lightbulbs, their life in burning hours was estimated as under for 100 bulbs of each brand. (i) Which brand gives higher life? (ii) Which brand is more dependable?

{:("Column A" , "A stores sells Brand A items and Brand B items at 75% and 80%, respectively, of list prices. During festival season, discount of 20% and 25%, on Brand S and Brand B, respectively, are offered. Spinach tins of Brand A and Brand B have the same list price","ColumnB"),("Cost of spinach tins of Brand A during festival season",,"Cost of spinach tins of Brand B during festival season"):}

Study the double bar graph shown below and answer the questions that follow: (a) What information is represented by the above double bar graph? (b) In which month sales of Brand A decreased as compared to the previous month? (c) What is the difference in sales of both the Brands for the month of June? (d) Find the average sales of Brand B for the six months. (e) List all months for which the sales of Brand B was less than that of Brand A. (f) Find the ratio of sales of Brand A as compared to Brand B for the month of January.