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  1. If xy =36, then which of the following is correct?
    1. x : 9 = 4 : y
    2. 9 : x = 4 : y
    3. x :17 = y : 7
    4. x : 6 = y : 6
Correct Option: A

xy =36
⇒ xy = 4 x 9,
⇒ x/9 = 4/y
∴ x : 9 = 4 : y


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