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Question

Find the ratio in which D divides side BC if Ar(ΔABD)Ar(ΔADC)=23.


A

43

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B

23

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C

23

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D

1

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Solution

The correct option is C

23



In ΔABD and ΔADC, the height is common as it is the perpendicular distance from point A to side BC.
Ar(ABD)Ar(ADC)=(12)(BaseBD)(HeightAE)(12)(BaseDC)(HeightAE)=BDDC=23 i.e. D divides BC in the ratio 2:3.


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