Which value of k gives the solution x = 15 and y = 10 for the linear equation x = 6y-3k?
15

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Solution

The correct option is A 15
Given equation: x = 6y-3k ....(i)
Putting the value of x = 15 and y = 10 in equation (i) we get,
x = 6y-3k
15 = 6(10) - 3k
15 = 60 - 3k
3k = 60 - 15
3k = 45
k = 45/3
k = 15.
Therefore, the value of k is 15.

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