Answer :

i. In mixture A,


The number of blue containers = 3


The number of white containers = 4


Ratio of blue and white =


In mixture B,


The number of blue containers = 3


The number of white containers = 3


Ratio of blue and white =


Clearly, mixture A would be lighter shade.


ii. In mixture C,


The number of blue containers = 3


The number of white containers = 3


Ratio of blue and white =


In mixture D,


The number of blue containers = 2


The number of white containers = 5


Ratio of blue and white =


Clearly, mixture A would be lighter shade.


iii. In mixture E,


The number of blue containers = 6


The number of white containers = 1


Ratio of blue and white =


In mixture F,


The number of blue containers = 4


The number of white containers = 2


Ratio of blue and white =


Clearly, mixture F would be lighter shade, since for lighter shade white container should be equal or more than or nearest number of blue container.


iv. In mixture G,


The number of blue containers = 3


The number of white containers = 3


Ratio of blue and white =


In mixture H,


The number of blue containers = 4


The number of white container = 3


Ratio of blue and white =


Clearly, mixture G would be lighter shade, since for lighter shade white container should be more than blue container.


From the above all mixtures, mixture D is lightest among them.


The total number of containers required for painting = 105


Number of blue container required for painting =


Number of white containers required for painting =


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