Chain Rule Practice Test 3 with solutions

Question : 3 of 10

Marks: +1, -0

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

Solution:

Wire (m)	Cost (Rs.)
x	d
y	a

⇒

a/d

y/x

∴ a = Rs.

{yd}/x

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