SSC CGL 2018 PYQ — Question 76

SSC CGL Tier II Quant - 21/02/2018 • Quantitative Aptitude • Q76

In the given figure, MNOP is a parallelogram. PM is extended to Z. OZ intersects MN and PN at Y and X respectively. If OX = 27 cm and XY = 18 cm, then what is the length (in cm) of YZ ?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2, i.e. 22.5

MNOP is a parallelogram

In △PXO and △NXY

∠PXO = ∠NXY (vertically opposite angle)

∠XPO = ∠XNY (vertically opposite angle)

So, △PXO ~ △NXY

XO/XY = PO/NY

YN/PO = 18/27

MX/PO = 3-2/2 = 1/3

Now in △ZPO:

ZY/ZO = MY/PO = 1/3

ZY/(ZY + 45) = 1/3

ZY = 22.5