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The average temperature for Wednesday, Thursday and Friday was 40°C. The average for Thursday, Friday and Saturday was 41° C. If temperature on Saturday was 42° C, what was the temperature on Wednesday?

A. 39° C

B. 44° C

C. 38° C

D. 41° C

Answer: Option A

Solution(By Examveda Team)

Average temperature for Wednesday, Thursday and Friday = 40° C
Total temperature = 3 × 40 = 120° C
Average temperature for Thursday, Friday and Saturday = 41° C
Total temperature = 41 × 3 = 123° C
Temperature on Saturday = 42° C
Now,
(Thursday + Friday + Saturday) - (Wednesday + Thursday + Friday) = 123 - 120;
Saturday - Wednesday = 3
Wednesday = 42 - 3 = 39° C

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Comments ( 14 )

  1. Charlie Charles
    Charlie Charles :
    4 months ago

    Let a=Wednesday
    b=Thursday, c=Friday, d=Saturday

    Eqn 1: (a+b+c)/3 =40°C

    Eqn 2: (b+c+d)/3 = 41°C
    Where d=Saturday=42°C

    (b+c+42)/3 = 41°C
    b+c+42 = 41*3
    b+c = 123-42 = 81°C
    : Thursday+Friday=81°C

    For Wednesday, using eqn 1
    (a+81)/3 = 40°C
    a+81 = 40*3
    a = 120-81
    a = 39°C
    Temperature on Wednesday was 39°C

  2. Ziarul Islam
    Ziarul Islam :
    1 year ago

    Right

  3. 17-311 Manasa.P
    17-311 Manasa.P :
    1 year ago

    Short cut method is also explain...

  4. M.Tahir Khan
    M.Tahir Khan :
    2 years ago

    Good expalined

  5. Ramkrishna Pande
    Ramkrishna Pande :
    2 years ago

    Saturday - Wednesday = 3 what we get

  6. Sujith Kumar
    Sujith Kumar :
    2 years ago

    explain in shortcut method

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    Science And :
    2 years ago

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    Pramod Pardhi :
    3 years ago

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  9. Shashi Patil
    Shashi Patil :
    4 years ago

    hi

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    Arshid Ali :
    6 years ago

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  11. Anonymous
    Anonymous :
    7 years ago

    39 is correct answer

  12. Anamika Awasthi
    Anamika Awasthi :
    7 years ago

    its correct ans is 39

  13. Kumar Kavi
    Kumar Kavi :
    7 years ago

    ur solution is correct but answer choice not correct
    it should be A)39`c

  14. Shashikant Satav
    Shashikant Satav :
    7 years ago

    easy but some tricky

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