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Question

An angle is 30 more than half of its complement. Find the angle.


A

150

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B

75

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C

60

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D

50

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Solution

The correct option is D

50


Let the angle be x.

Its complement =(90x)

x=12×(90x)+30

2x=90x+60

2x+x=150

3x=150

x=50


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