Question

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.
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Answer 1

Answer:

In a city 20 percent of the population travel by a car, 50 percent travel by bus and 10 percent travel by both car and bus . Then persons travelling by a car or a bus is. A. 80 percent.

Answer 2

Answer:

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Step-by-step explanation:

let,

U equal to the person who travels by both.

R equal to the person who travels by car.

M equal to the person who travels by bus.

now,

the person travels by car or bus

n(RuM) equal to n(R)+n(M)-n(RnM)

. equal to 20+50-60

. equal to 70-60

. equal to 10 answer