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    How many labourers of double the efficiency are needed to build 3 such walls in 5 days ?

    6 labourers can build a wall in 10 days. How many labourers of double the efficiency are needed to build 3 such walls in 5 days ?

    1. 36
    2. 18
    3. 20
    4. 16
    Asked by Anurag Mishra on 19th April 2016 in Maths.
    2 Answers
    Professor

    Answer: (1) 36 

    Answered by Anurag Mishra on 24th April 2016..
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    (6*10*1)/(5*2) = 6
    3 such walls = 6*3 = 18

    Answered by chillbillnill on 12th December 2016..