A variable x varies directly with the cube of another variable y. When x = 4, y = 2. Find y when x = 32.
Explanation:
Given, x ∝ y3
⇒ x1y13=x2y23
⇒ 423=32y23
⇒ y23 = 64
⇒ y2 = 4
Hence, 4
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