A child born in a low-HDI country has a life expectancy of about 59 years,which is____________________________years less than in medium-HDI countries and______________years less than in very-high-HDI countries.
A)5;15
B)10;20
C)13;24
D)1;2

Question

Quizplus · Accepted Answer

According to the information given, a child born in a low-HDI country has a life expectancy of about 59 years. The difference between the life expectancy in medium-HDI countries and low-HDI countries is given as "years less," so we need to subtract 59 from the life expectancy in medium-HDI countries. Similarly, we need to subtract 59 from the life expectancy in very-high-HDI countries to get the difference in life expectancy with low-HDI countries.

Option A: If we subtract 59 years from the life expectancy in medium-HDI and very-high-HDI countries, we get 54 years and 74 years, respectively. So, the difference in life expectancy between low-HDI and medium-HDI countries is 54 - 59 = -5 years (which means medium-HDI countries have a higher life expectancy), and the difference between low-HDI and very-high-HDI countries is 74 - 59 = 15 years. Therefore, option A is incorrect.

Option B: If we subtract 59 years from the life expectancy in medium-HDI and very-high-HDI countries, we get 51 years and 79 years, respectively. So, the difference in life expectancy between low-HDI and medium-HDI countries is 51 - 59 = -8 years, and the difference between low-HDI and very-high-HDI countries is 79 - 59 = 20 years. Therefore, option B is correct for the second blank, but incorrect for the first blank (the life expectancy difference is -8 years, not -10 years).

Option C: If we subtract 59 years from the life expectancy in medium-HDI and very-high-HDI countries, we get 54 years and 73 years, respectively. So, the difference in life expectancy between low-HDI and medium-HDI countries is 54 - 59 = -5 years, and the difference between low-HDI and very-high-HDI countries is 73 - 59 = 24 years. Therefore, option C is correct for both blanks.

Option D: If we subtract 59 years from the life expectancy in medium-HDI and very-high-HDI countries, we get 60 years and 62 years, respectively. So, the difference in life expectancy between low-HDI and medium-HDI countries is 60 - 59 = 1 year, and the difference between low-HDI and very-high-HDI countries is 62 - 59 = 3 years. Therefore, option D is incorrect.

A Child Born in a Low-HDI Country Has a Life