Espadoodle Espadoodle

03-03-2017
Mathematics

contestada

A box contains 150 black pens and 50 red pens. Jose said the sum of the probability that a randomly selected pen will not be black and the probability that the pen will not be red is 1. Explain whether you agree.

Respuesta :

Sheilagirl1 Sheilagirl1

03-03-2017

I don't agree the probability
Is a 3:1 ratio
Because the black pen amount is triple the red pen amount

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Unknow1 Unknow1

03-03-2017

Box contains = 150 Black pens and 50 red pens
Ratio = black pen : red pen
150 : 50
dividing both sides by 50
3 : 1
The ratio is 3 black pens for 1. Jose said wrong. OmG jose is a liar! xD

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