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General Aptitude
Quantitative Aptitude
GATE 2016
Medium

A person moving through a tuberculosis prone zone has a 50% probability of becoming infected. However, only 30% of infected people develop the disease. What percentage of people moving through a tuberculosis prone zone remains infected but does not show symptoms of disease?

  • A15
  • B33
  • 35
  • D37

Explanation

50% become infected. Of those, only 30% develop the disease (show symptoms), so 70% of infected people remain infected without symptoms. Infected-without-symptoms = 50% x 70% = 35%.

Source: GATE ME 2016 Set-1 (2016)

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