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Question

From the figure given below, find out the measure of ABD and DBC respectively.


A

24 and 126

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B

42 and 156

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C

24 and 156

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D

42 and 126

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Solution

The correct option is C

24 and 156


Since ABC is a straight line, ABC = ABD + DBC

And also, since ABC is a straight line, ABC=180

ABD + DBC = ABC = 180

⇒ (2x + 15) + (2x - 15) = 180
⇒ 4x = 180
⇒ x = 45

Therefore,

ABD = 2x + 15
= (2 × 45) + 15
= 90 + 15
= 105

DBC = 2x - 15
= (2 × 45) - 15
= 75

ABD = 105 and DBC = 75


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