Chain Rule - Arithmetic Aptitude Questions and Answers

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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?

Rs. $[\frac { XY} { d}]$

Rs. (xd)

Rs. (yd)

Rs. $[\frac { Yd} { X}]$

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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