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What was the total number of subscriptions for Newsmagazine x during the year in which Newsmagazine x accounted for 14.6 percent of nationwide news magazine subscriptions?

In which of the following years did subscriptions to Newsmagazine z account for approximately \frac{1}{6} of the total nationwide magazine subscriptions?

Re: Subscriptions to newsmagazine x [#permalink]
26 Sep 2017, 08:21

Q1: we just have to check which is the year for wich magazine X's subscriptions were 14.6% from the right part of the first chart and we get that the total number of subscriptions is 7,000. Answer D.

Q2: we have to use the table at the bottom to compute for each year the ratio between subscriptionsof magazine z to the total and check the one most similar to 1/6=1.67. The answer is B.

Q3: To get the increase in nationwide subscriptions to any newsmagazine, we need to get the nationwide subscription for the two years of interest that can be computed using the percentage of magazine X subscriptions on the total. E.g. in 1995, the total nationwide number of subscriptions is 1.5/0.246 = 6.1 mln while in 1996, the number is equal to 2.6/0.283 = 9.2 mln. Then, the percent increase is computed as (9.2-6.1)/6.1*100 = 50.6%, rounded to 51%. Answer D.

Q4: same rationale as above. To find the nationwide number of subscription in 1998 we can use the percentage of magazine x subscriptions as 3.3/0.205 = 16.1, rounded to 16 mln. Answer C.