In 2000 , there were 0.025 phone subscriptions per person in Africa for both mobile and land-line phones. After that, the land-line phone subscriptions steadily increased by 0.01 every 7 years, while the mobile phone subscriptions grew 48% per year. What was the total number of phone subscriptions per person in 2002? Choose 1 answer: (A) 0.027 (B) 0.034 (C) 0.073 (D) 0.083

Question

In 2000 , there were 0.025 phone subscriptions per person in Africa for both mobile and land-line phones. After that, the land-line phone subscriptions steadily increased by 0.01 every 7 years, while the mobile phone subscriptions grew  48% per year. What was the total number of phone subscriptions per person in 2002? Choose 1 answer: (A) 0.027 (B) 0.034 (C) 0.073 (D) 0.083

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Calculate Increase Land-line Subscriptions: Calculate the increase in land-line phone subscriptions from 2000 to 2002. Since the land-line phone subscriptions increase by 0.01 every 7 years, and only 2 years have passed by 2002, there would be no increase because the increase happens only every 7 years. Land-line subscriptions in 2002 = Land-line subscriptions in 2000 = 0.025Calculate Increase Mobile Subscriptions: Calculate the increase in mobile phone subscriptions from 2000 to 2002. The mobile phone subscriptions grow by 48% per year. To find the total growth over 2 years, we need to apply the growth rate for each year. For the first year (2000 to 2001):  Mobile subscriptions in 2001 = Mobile subscriptions in 2000 * (1 + growth rate) = 0.025 * (1 + 0.48) = 0.025 * 1.48First Year Growth Calculation: Complete the calculation for the first year's growth. Mobile subscriptions in 2001 = 0.025 * 1.48 = 0.037Calculate Mobile Subscriptions Second Year: Calculate the mobile subscriptions for the second year (2001 to 2002) using the growth rate. Mobile subscriptions in 2002 = Mobile subscriptions in 2001 * (1 + growth rate) = 0.037 * (1 + 0.48) = 0.037 * 1.48Second Year Growth Calculation: Complete the calculation for the second year's growth. Mobile subscriptions in 2002 = 0.037 * 1.48 = 0.05476 Since we are looking for the number of subscriptions per person, we can round this to the nearest thousandth, which gives us 0.055.Total Phone Subscriptions Calculation: Add the land-line and mobile phone subscriptions together to get the total number of phone subscriptions per person in 2002. Total subscriptions in 2002 = Land-line subscriptions in 2002 + Mobile subscriptions in 2002 = 0.025 + 0.055 = 0.080

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