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11 January, 23:57

A naturalist, and release fish in a lake that had brown trout and rainbow trout during the day she caught six brown trout and nine rainbow trout she estimates that there are 450 trout in the lake if the naturalist sample represents the lake population how many of the estimated 450 trout in the lake are rainbow trout

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  1. 12 January, 03:33
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    There are 450 trout in the lake.

    B - brown trout;

    R - rainbow trout.

    B : R = 6 : 9 = 2 : 3

    B = 2 t

    R = 3 t

    2 t + 3 t = 5 t

    5 t = 450

    t = 450 : 5

    t = 90

    R = 3 * 90 = 270

    Answer:

    There are 270 rainbow trout in the lake.
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