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15 October, 18:24

An electric firm finds that 4% of its resistors are defective. how many resistors do they have to make to deliver 5000 resistors?

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  1. 15 October, 20:15
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    Answer is 5000 resistors, the quesiton never said that they had to deliver working resistors

    but if you wanted 5000 working resistors

    the rest is working

    100%=all

    all-defective=working

    100-4=96

    96%=working

    working=5000

    find 100%

    96%ofall=5000

    percent means parts out of 100

    96/100ofall=5000

    times both sides by 100

    96ofall=500000

    divide both sides by 96

    all=5028.33333

    round up

    5029 resistors must be made to deliver at least 5000 working ones
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