Which value of k gives the solution x = 10 and y = 5 for the linear equation x = 4y - 2k ?
A
11
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B
-4
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C
-2
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D
5
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Solution
The correct option is D 5 Substituting the values of x and y in the given equation. x = 4y - 2k ⇒ 10 = (4×5) - 2k. ⇒ 10 = 20 - 2k. ⇒ 2k = 20 - 10 = 10 Hence, k = 5