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If a 1.5 m tall girl stands at a dist...

If a 1.5 m tall girl stands at a distance of 3 m from a lamp-post and casts a shadow of length of 4.5 m on the ground, then the height of the lamp-post is (a) 1.5 m         (b) 2 m       (c) 2.5 m        (d) 2.8 m

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