The value of Q is 78
Given that the three internal angles of the triangle are,
P = 3x + 8
Q = 2x
R = 67
Sum of all the internals angles in a triangle = 180
i.e., P + Q + R = 180
Substitute the given values in above equation. We get,
(3x+ 8) + 2x + 67 = 180
3x + 2x + 8 + 67 = 180
5x + 75 = 180
5x = 180 -75 = 105
i.e., x = 105/5 = 39
Now,
P = 3x + 8 = 3(39) + 8
So, P = 117
Q = 2x = 2(39)
So, Q = 78
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