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In the following image we have two poles with heights of 80 cm and 50 cm. They are 180 cm apart each other and we have a light bulb hanging from the ceiling between them. The post with height 80 cm casts a shadow of 60 cm on the ground. The post with 50 cm casts a shadow of 30 cm on the ground. How high the light bulb is hanging above the floor? (the diagram is not draw to scale)

 

 Jul 2, 2020
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Here's a start:

 

Can you take it from here? (i.e. you have two simultaneous equations that you can solve for h and x).

 Jul 2, 2020

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