Pls check scrshot in attached document...
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If you look at both the triangles you can determine the height and base of each triangle without doing any calculation
triangle MLN' height = 12, base =12 (14-2)
therefore area = 1/2(12)(12) = 72
triangle PQR's height = 4, base=4 (10-6)
therefore area = 1/2(4)(4)= 8
8/72=1/9
Hence A is the answer.
