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Question

In the figure below, x = 30. Find the value of (6y – 3x) in degrees.


  1. 150


Solution

The correct option is A 150
Given,
x=30,
So,
2x=60
Also,
2x+3y=180  (linear pair)
Replacing x in the above equation,
60+3y=180
3y=120
y=40

The value of
6y3x
=6(40)3(30)
=240 90 
=150

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