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24 December, 16:37

How much does this fish weigh? How much does this fish weigh if it's tail weighs 4kg, it's head weighs as much as it's tail and half it's body, and it's body weighs as much as it's head and tail together?

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  1. 24 December, 17:05
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    Body Weight: w = (t+0.5w) + t

    Tail Weight: t=4

    Head Weight: t+0.5w

    w=t+0.5w+t

    But t=4,

    w=4+0.5w+4

    w-0.5w=8

    0.5w=8

    Therefore: w=16.
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