Multiple choice

Passage

Directions: Study the following information carefully to answer the question given below. Place Percentage of Persons Using Public Transport Out of the Persons Using Public Transport, Percentage of Males Out of the Persons Using Public Transport, Percentage of Persons Using Bus A 55% 60% 20% B 60% 50% 30% C 70% 55% 40% D 55% 40% 40% E 80% 60% 50% F 70% 70% 30% G 50% 80% 30%

If the populations of places A, B and C are in ratio of 1 : 2 : 4, then what percent of total persons in all three places A, B and C use public transport?

  1. 65%

  2. 74%

  3. 78%

  4. 79%

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let total population be 1+2+4 = 7 units. Persons using public transport: A=0.55*1=0.55, B=0.6*2=1.2, C=0.7*4=2.8. Total = 0.55+1.2+2.8 = 4.55. Percentage = (4.55/7) * 100 = 65%.

AI explanation

Assume the populations of places A, B, and C are 1, 2, and 4 respectively, making the total population 7. The number of people using public transport is found by multiplying the population of each place by its respective percentage (55%, 60%, and 70%). This results in 0.55 for A, 1.20 for B, and 2.80 for C, summing to 4.55. Divide this sum by the total population of 7 to get 0.65, meaning 65% of the total population uses public transport.

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