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18 May, 15:47

On the average, a certain light bulb is supposed to last 450 hours. If it

can expect to finish reading during the life of the bulb?

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  1. 18 May, 15:49
    0
    72 novels

    Step-by-step explanation:

    A number of assumptions are involved regarding operating environment, utilization fraction, and probability of failure as a function of time. The precise meanings of the words "average", "supposed to last", "maximum", and "expect" are involved. The details are too arcane to go into here.

    (450 hours) / (6 1/4 hours/novel)

    = (450 / (25/4)) novels

    = (450*4/25) novels

    = 72 novels
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