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20 September, 11:13

A factory robot recently examined some bulbs, of which 2 were flawed and 18 were not. If 30 more bulbs are examined, predict how many will be flawed.

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  1. 20 September, 14:45
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    3 bulbs should be flawed

    Step-by-step explanation:

    2 + 18 = 20

    20 bulbs were examined

    2/20 = 1/10 were flawed

    looking at the next 30 bulbs

    30 * 1/10 = 3

    3 of the next 30 bulbs should be flawed
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