CAT Question Paper | CAT Verbal Ability Slot
Question :
How many individuals who were being tracked and who were less than 30 years of age in 1980 survived until 2020?
Started 3 months ago by Shashank in
Option A
is the correct answer.
Explanatory Answer
The total number of male and female test cases in 1980 = 1000
The total number of males alive in 2000 = 180 + 205 + 160 + 100 = 645 Thus, the number of dead males in 2000 = 1000 - 645 = 355
Similarly, the total number of dead females in 2000 = 1000 - (210 + 175 + 150 + 120) = 1000 - 655 = 345
Thus, the required ratio = 355 : 345 = 71 : 69. Thus, the correct option is A.
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