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Question

In the figure below, x = 30. The value of (6y – 3x) is ___.


A
60
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B
150
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C
180
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D
120
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Solution

The correct option is B 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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