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A company started manufacturing solar power generators in the year 2008. The panels that are used in the generators can be used for exactly one year post which, they have to be discarded. The company provides panels, free of cost, for the first two years in which they have to be replaced. After that, panels brought from the company cost Rs. 2000 while third party vendors provide them for Rs. 1500. Every year, 30% of the customers buy the panels from the company while the rest settle for the cheaper alternative. A partial table gives an account of the replacements that were made by the company and the third party vendors for the years 2012 to 2016. Assume that all the solar generators manufactured in the year 2008 are operating currently.
If for any question, the answer cannot be determined uniquely, mark 0 as your answer.
1. How many solar power generators were sold in the year 2013?
2. How many solar power generators were sold from 2008 to 2010?
3. In 2012, how many panels did the company sell or replace?
4. How many solar power generators were sold in 2010?
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