Question

A city has a population of 10000 if it includes 5400 men and the number of children in the city​

Answer 1

Answer:

Given: The population of town (ξ)=10000

No of people who reads newspaper A =n(A)=5400

No of persons who reads newspaper B =n(B)=4700

No of people who reads both newpapers =n(A∩B)=1500

n(A∪B)=n(A)+n(B)−n(A∩B)

=5400+4700−1500=8600

and

n(A∪B)

′

=n(ξ)−n(A∪B)

=10000−8600=1400

∴ No of persons who do read either of the papers are 1400.

Answer 2

Answer:

A farmer bought a buffalo for ₹ 44000 and a cow for ₹ 18000. he sold

the buffalo at a loss of 5% but made a profit of 10% on the cow.

calculate the amount of profit or loss incurred by the farmer from the

overall transactio

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