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
What is the respective ratio of number of people using mobile service L in the year 2005 to those using the same service in the year 2004 ?
people using L in 2005 = 15k
people using L in 2004 = 10k
ratio = 15k/10k = 3:2
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