Hi guys,
Can anyone help me with the following problem?
For how many of the years shown was the amount of private health expenditures at least double the amount of public health expenditures?
Hey,
Welcome to our forum!
You should use the chart on the top left corner. It contains the percentage of expenditure in public vs private health.
For example, in 1975, somewhere between 20 and 30 percent of the total expenditure was on public, and somewhere between 70 and 80 percent of the total expenditure was on private health. So 1975 counts as one of our answers, because 72 is more than double of 26, and the percentages of both of costs (public and private) are calculated relative to one thing, which is the total expenditure.
A little more advanced solution:
We know that in all years, %public + %private is equal to 100. So if %public is %33.33 or less, %private must be %66.67 or more to reciprocate. So any year in which the percentage of public expenditure is less than or equal to %33.33 is an answer. As I can see the chart, 1975 and 1976 fall into this category, although I have doubts about 1979 and 1980.
Thanks for the explanation and advanced solution.
But, I couldn’t understand why the percentages of the both costs are calculated relative to one thing (the total expenditure) , where the total amount of expenditures are different for every year.
I meant in a specific year, both of those numbers are calculated relative to one thing, which is the total expenditure for that year.
And since it is like this, if the percentage of public is double the percentage of private (for example), on can say the actual value of the public is double the actual value of private too.
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Got it.
Thanks again for the detailed explanation. 