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Discussion :: Chain Rule

  1. If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?

  2. A.

    Rs.\([\frac { XY} { d}]\)

    B.

    Rs. (xd)

    C.

    Rs. (yd)

    D.

    Rs.\([\frac { Yd} { X}]\)

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    Answer : Option D

    Explanation :

    Cost of x metres = Rs. d.

     

    Cost of 1 metre = Rs\([ \frac { d } { X }]\)

    Cost of y metres = Rs[\([ \frac { d } { X }.Y]\)Rs\([\frac { Yd} { X}]\)


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