Study the given graph carefully to answer the question that follow:
Number of people (in thousands) using three different types of mobile services over the years
Number of people using mobile service N in the year 2006 forms approximately what per cent of total number of people using all the three mobile services in that year ?
people using N in 2006 = 10k
total users in 2006 = 55k
required %age = (10/55)*100 = 200/11 = 18.18 = ~18
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