A vertical stick 20 m long casts a sh...

A vertical stick 20 m long casts a shadow 10m long on the ground. At the same time, a tower casts a shadow 50m long on the ground. The height of the tower is (a) 100m (b) 120m (c) 25m (d) 200m

A

30 m

B

50 m

C

80 m

D

100 m

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