Multiple Choice Questions on The dimensions of a rectangular room when increased by 4 metres are in the ratio of 4 3 and when dec........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The dimensions of a rectangular room when increased by 4 metres are in the ratio of 4 3 and when dec...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The dimensions of a rectangular room when increased by 4 metres are in the ratio of 4: 3 and when decreased by 4 metres, are in the ratio of 2: 1. The dimensions of the room are

    12 m and 8 m

    Correct Answer

    6 m and 4 m

    Incorrect Answer

    16 m and 12 m

    Incorrect Answer

    24 m and 16 m

    Incorrect Answer
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    Explanation:

    we have L+4/B+4 = 4/3,

    3L+12 = 4B+16,

    3L - 4B = 4,

    again we have, L-4/B-4 = 2/1,

    L - 4 = 2B - 8, L - 2B = -4

    solving both equation we get L = 12 and B = 8.

    Hence, option 1 is the correct answer.

    By: MIRZA SADDAM HUSSAIN
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    Neha Goyal

    2 s in place of 20 s

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