πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    What is the age of the person who lives on the 5th

    floor? Study the following information carefully and answer the questions below-: There are 7 persons A, B, C, D, E, F and G who live in a same building. The building has 7 floors (where the ground floor is numbered 1 and the floor above it is numbered 2 and so on). No two persons live on the same floor. Each of these persons has a different age. F, E, B, G do not live at the ground floor. Ages of F and G are 24 and 60 respectively. Age of the person living at 7th floor is 50 and the age of the person living at 3rd floor is 20. Age of B is double the age of F. None of them lives at the third floor. Age of E is equal to the average of sum of the ages of G and A and the age of E is 40. Age of the person living at the 2nd floor is one more than the age of the person living at 1st floor.E lives just below the floor at which B lives and just above the floor at which F lives. E does not live at 3rd floor. D is older than C.
    A 60 Correct Answer Incorrect Answer
    B 48 Correct Answer Incorrect Answer
    C 40 Correct Answer Incorrect Answer
    D 24 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Age of B is double the age of F. None of them lives at the third floor. Ages of F and G are 24 and 60 respectively. Age of the person living at 7 th floor is 50 and the age of the person living at 3 rd floor is 20. Using the first hint we can find out the age of B with respect to F. And after using the second hint we can say that the ages of F and G are 24 and 60 respectively. But we already have a hint that age of B is twice the age of F. So, now we can say that the age of B is 48. E lives just below the floor at which B lives and just above the floor at which F lives. E does not live at 3 rd floor. Age of E is equal to the average of sum of the ages of G and A and the age of E is 40. Using the first hint we can say that there is only one possible scenario in which we can fix the positions of B, E and F under the given conditions. This is shown in the table given below Now, with the second hint β‡’ E = (G + A)/2 It is given that the age of E is 40 years. β‡’ 40 = (60 + A)/2 β‡’ A = 20 years Therefore, the age of A is 20 years and we know that the person whose age is 20 lives on the 3 rd floor. So, we can say that A lives on 3 rd floor F, E, B, G do not live at the 1 st floor. Age of the person living at the 2 nd floor is one more than the age of the person living at 1 st floor. With the first hint we can say that G does not lives on the 1 st floor and we know that G cannot live on 7 th floor either as the person whose age is 50 lives on 7 th floor and the age of G is 60. So, now there is only one floor left for G to lives i.e. 2 nd floor. Using the second hint we can figure out that the age of the person who lives on 1 st floor is 59. Practice Next

    Relevant for Exams:

    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call