Study the following graph carefully to answer the questions that follow:
Number of Computers Manufactured and Sold by Various Companies in a Year (Number in Lakhs)
What is the difference between the average number of computers manufactured by all the companies together and the average number of computers sold by all the companies together ?
Solution
Total number of computers manufactured by all the companies together
= 10 + 15 + 7.5 + 22.5 + 30 = 85 lakhs
Total number of computers sold by all the companies together
= 7.5 + 12.5 + 5 + 17.5 + 25 = 67.5 lakhs
Difference = 85 - 67.5 = 17.5 lakhs
=> Required average = $$\frac{17,50,000}{5} = 3,50,000$$
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