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Glass In The Door

Problem

A 52 kg piece of solid hardword measuring 3" by 6"6" and 3" thick is made into a door by cutting out two rectangular panels measuring 9" by 2"6" and replacing them with glass.


If the door and glass weigh 45 kg together, what is the weight of the glass?

Problem ID: 165 (Apr 2004)     Difficulty: 2 Star

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