Mark the correct alternative in the following: In a city 20% of the population travels by car, 50% travels by bus and 10% travels by both car and bus. Then, persons travelling by car or bus is

Question

Philoid · Accepted Answer

Let A be the set of population travels by car(in percentage) and

B be the set of population travels by bus(in percentage).

Then A⋂B is the set of population travels by car and bus and

A⋃B is the set of population travels by car or bus.

Then,n(A)=20 , (B)=50 ,n(A⋂B)=10

n(A⋃B)=n(A)+n(B)-n(A⋂B)

=20+50-10

=60

∴ The set of population travels by car or bus is 60%

Mark the correct alternative in the following:In a city 20% of the population travels by car, 50% travels by bus and 10% travels by both car and bus. Then, persons travelling by car or bus is

Mark the correct alternative in the following:
In a city 20% of the population travels by car, 50% travels by bus and 10% travels by both car and bus. Then, persons travelling by car or bus is