XZ and AB are parallel then, using proportionality theorem, find the value of YZ.
A
4
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B
16
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C
20
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D
24
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Solution
The correct option is C20 The lines XZ and AB are parallel. Therefore, by the basic proportionality theorem, ⇒YBZB=YAXA⇒YB16=28 ⇒8YB=32 ∴YB=4 Therefore, YZ=4+16=20