Exams › IBPS PO › Quantitative Aptitude
Study the following information carefully and answer the question given below. There are four floors in a building, and there are three flats on each floor: Flat 1, Flat 2 and Flat 3. Flat 3 is to the east of Flat 2, and Flat 2 is to the east of Flat 1. In each flat, a certain number of persons live. The number of persons on an even-numbered floor is 6. The number of persons in Flat 3 of Floor 2 is a multiple of 4 but less than 10. There are 4 persons in either Flat 1 or Flat 2 of Floor 4. The number of persons in Flat 1 of Floor 2 is a multiple of 6 but less than 18. There are 10 persons in Flat 3 on Floor 1. The total number of persons on Floor 2 is 26. There are 11 persons in Flat 1 on an even-numbered floor. The total number of persons on Floor 4 is 29. The sum of the number of persons in Flat 3 on all floors is 37. One of the odd-numbered floors in Flat 3 contains 7 persons. The number of persons in Flat 1 of Floor 1 is the difference between the total number of persons on Floor 2 and Flat 3 of Floor 3. The number of persons in Flat 2 of Floor 3 is the square of the number of persons in Flat 1 of Floor 1. The total number of persons in Flat 2 on all floors is 32. If 40% of the total persons living in Building I are female and 20% of the total persons living on the first floor of Building I are female, then what percent of the total females living in the building are living on the ground floor?
- 50%
- 66.67%
- 70%
- 78.89%
Correct answer: 66.67%
Solution
The arrangement conditions determine the total persons on each floor, and hence the number of persons on the ground floor. Since 40% of the building are females and 20% of the first floor are females, the ground-floor female count works out to be two-thirds of the total females in the building. Therefore, the required percentage is 66.67%.
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