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Question

If 2xy = 36, given the value of x is found from the equation : 9x = 54, what is the value of y ?

A
3
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B
7
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C
1
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Solution

The correct option is A 3
From 9x = 54, divide both sides by 9, we get x = 6
Substitute value of x = 6 in equation 2xy = 36 , i.e. 2×6×y=36
12y=36
Now divide both sides by 12, we get y = 3
solution is A

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