20% of Kay’s pencils in her pencil case are broken. What is the chance of taking a pencil that is no

Discussion in 'Calculator Requests' started by math_celebrity, Aug 12, 2020.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    20% of Kay’s pencils in her pencil case are broken. What is the chance of taking a pencil that is not broken from the case if she picks one at random?

    This means 100% - 20% = 80% of pencils are not broken

    So the probability of drawing a pencil which is not broken is 80%
     
    math_celebrity, Aug 12, 2020
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