Multiple Choice Questions on A floor of size 72m to 90m is to be tiled What should be the maximum size of each side of the tile i........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

A floor of size 72m to 90m is to be tiled What should be the maximum size of each side of the tile i...........

Quantitative Aptitude (RRB NTPC) Mensuration 2D
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    A floor of size 72m to 90m is to be tiled. What should be the maximum size of each side of the tile, if only square pieces of tiles are to be used?12

    12 metre

    Incorrect Answer

    15 metre

    Incorrect Answer

    18 metre

    Correct Answer

    9 metre

    Incorrect Answer
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    Explanation:
    Breadth of floor =72 m.
    Length of floor=90 m.
    The size of each side of the square tile should be such that it must divide both the breadth and length of the floor, then only we can use complete tiles.
    So maximum size of each side of square tile
    HCF of 72 and 90= 18 m.

    By: Barka Mirza
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