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Question

AOB is straight line. The value of AOP is ___.


A

70

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B

110

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C

60

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D

120

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Solution

The correct option is B

110


Since AOB is straight line,

AOP+BOP=180 (Linear pair)

ie, x+20+x20=180

2x=180

x=90

AOP=x+20=90+20=110


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