In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.
What is the percentage increase in production of laptops by HP in 2011 in comparison to that in 2010?
Number of laptops produced by HP in 2010 (in thousands) = 10
Number of laptops produced by HP in 2011 (in thousands) = 25
=> Required % increase = $$\frac{25 - 10}{10} \times 100$$
= $$15 \times 10 = 150 \%$$
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