If the equations 3x + 4y = 24 and 6x + 8y = 48 are equivalent, which of the following pairs of equat

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A. 2x + 3y = 18 and 4x + 6y = 36

B. x + 2y = 5 and 2x + 4y = 10

C. 5x - 3y = 7 and 10x - 6y = 14

D. x - y = 1 and 2x - 2y = 2

E. None of the above

Answer: B. x + 2y = 5 and 2x + 4y = 10

Both equations in option b are multiples of each other, thus they are equivalent.

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