Question

In a village, a survey found that 25% of the people were keeping normal health. Of the remaining 75%, 50,000 were suffering from TB, 40,000 from hypertension and 15,000 from both TB and hypertension. No other ailments were present. What is the population of the village (in lakhs) ?

Answer 1

Answer:

Step-by-step explanation:

The following data is given in the question-

75% of the total population consists of:

people suffering of TB = 50000  ,

suffering from hypertension = 40000 and

TB and Hypertension both= 15000 .

We need to find the population of the village

According to Set theory, A∪B = A + B - A∩B

So as per the given information:

The population of unhealthy people is,

$= 50000 + 40000- 15000 = 75000.$

Since 75000 = 75% of total population, so total population = 100000 i.e 1 Lakh

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