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SSC Sample Paper Mock Test-15 SSC CGL Tear-II Paper-1

  • question_answer
    A class room is 7 m long, 6.5 m wide and 4 m high. It has one door \[3\,\,\text{m}\times 1.4\,\,\text{m}\]and three windows each measuring \[2\,\,\text{m}\times 1\,\,\text{m}\text{.}\]The interior walls are to be coloured washed. The contractor charges Rs. 5.25 per sq m. The cost of colour washing is

    A) Rs. 519.45

    B)  Rs. 159.45

    C)  Rs. 513.45

    D)  Rs. 419.45

    Correct Answer: C

    Solution :

    Area of the walls to be coloured washed = Area of four wall \[-\](Area of door + Area of three windows) \[=2\times 4(7+65)-(3\times 1.4+3\times 2\times 1)\] \[=108-102=97.8\,\,{{\text{m}}^{2}}\] Total cost of colour washing = Rs. \[(97.8\times 5.25)\]= Rs. 513. 45


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