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For what values of ‘k’ will the pair of equations 3x + 4y = 12 and kx + 12y = 30 not have a unique solution?

A. 12

B. 9

C. 3

D. 7.5

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সঠিক উত্তরঃ B. 9

Explanation:

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For what values of ‘k’ will the pair of equations 3x + 4y = 12 and kx + 12y = 30 not have a unique solution?