Math

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The length and bredth of a rectangular field are in d ratio 5:3.If the cost of reaping the field at 85paise per sq. Meter is Rs.624.75,find the cost of fencing it at the rate of Rs. 4per meter.
Plz give me full solutn nd ans is Rs.448

  • Math -

    area is 5x*3x = 15x^2
    perimeter is 2(5x+3x) = 16x

    reaping costs .85*15x^2 = 12.75x^2
    fencing costs 4*16x = 64x

    12.75x^2 = 624.75
    x = 7

    64 * 7 = 448

  • Math -

    Thank u :)

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