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16 June, 03:48

An astronaut visited Mars. His weight on Earth was 180 pounds, and his weight on Mars was only 72 pounds. He removed a rock with a weight of 16 pounds on Mars. What is the weight of the rock on Earth?

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  1. 16 June, 07:46
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    Find the percentage of ratio to weight.

    180/72 = 2.5

    So 2.5 Earth Pounds = 1 Mars Pound

    16*2.5 = 40 Pounds the rock weighs on earth.
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