What is the temperature of the last day

The average temperature of the first 3 days of a week is 26.50 C and that of the next 3 days is 29C. If the weekly average is  27.4C, What is the temperature of the last day:

  1. 26.80C
  2. 24.80C
  3. 25.30 C
  4. 25.20 C
Monis Rasool Professor Asked on 25th October 2015 in Maths.
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  • 1 Answer(s)

    Answer: (3) 25.3oC

    Explanation:-
    The average temperature of the first 3 days of a week = 26.5oC
    Then, the total temperature of first 3 days of a week = 3 x 26.5
    = 79.5oC

    The average of next 3 days of the same week = 29oC
    Then, the total temperature of the next three days = 29 x 3
    = 87oC

    The average temperature of the week = 27.4oC
    Then, the total temperature of the week = 7 x 27.4
    = 191.8oC

    Then, the temperature of the last day = 191.8 – (87 + 79.5)
    = 25.3oC

    Hence, the answer is (3) 25.3oC.

    Anurag Mishra Professor Answered on 25th October 2015.
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