olymmath

TR-MO-R1 2019 Problem 13

    AB∥CDAB \parallel CD olan bir ABCDABCD yamuğunun [BC][BC] kenarı üzerinde alınan bir EE noktası için, ∣BE∣>∣EC∣|BE| > |EC|, Alan(ABE)=15\text{Alan}(ABE) = 15, Alan(AED)=23\text{Alan}(AED) = 23 ve Alan(ECD)=4\text{Alan}(ECD) = 4 ise, ∣BE∣∣EC∣\dfrac{|BE|}{|EC|} oranı kaçtır?

    a) 5 b) 6 c) 7 d) 8 e) 9

    Official text Turkish Mathematical Olympiad, first round 2019 official paper, page 8. Quoted with source.

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