Not considering others, what is the percentage increase (approximate) in the number of mobile phones for the in the country from 2014 to 2018?
Explanation:
The number of users increase by 20% every year.
If the number of users in 2014 were 1,00,000, the number of users in 2018 will be = 10,000 × (1.2)4 = 2,00,736
Number of mobiles phones used by the given 5 companies in 2014 = 80% of 1,00,000 = 80,000.
Number of mobiles phones used by the given 5 companies in 2018 = 65% of 2,07,360 = 1,34,784.
∴ % Increase = 134784-8000080000 × 100 = 68.5%
Hence, option (c).
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