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Question

If (2k - 1, k) is a solution of the equation 10x - 9y = 12, then k =


  1. 1

  2. 2

  3. 4

  4. 3


Solution

The correct option is B

2


 (2k1, k) is a solution of the equation 

10x9y=12

Substituting the value of x and y in the equation

10(2k1)9k=12 20k109k=12 20k9k=12+10 11k=22 k=2211=2 k=2

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