Question
Download Solution PDFX is directly proportional to the square of Y. When X is 12, then Y is 2. Find the value of X when Y is 3.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
X is directly proportional to the square of Y. When X is 12, then Y is 2
Calculation:
X : Y2
So,
12 : 22
⇒ 12 : 4
⇒ 3 : 1
So, X : Y2 = 3 : 1
So, when Y = 3
⇒X : Y2 = X : 9
X : Y2 = X : 9 = 3 : 1
⇒ X = 27
∴ The required answer is 27.
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