07-09-2020
Mathematics

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HELPP PLEASE DUE TOMMOROW PLEASE ANSWER QUESTION B

HELPP PLEASE DUE TOMMOROW PLEASE ANSWER QUESTION B class=

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wangalores wangalores

07-09-2020

Answer:

28 non-blue marbles.

Step-by-step explanation:

Initial probability of choosing a blue marble = 4/12

Let the number of non-blue marbles to be added be x.

[tex]\frac{4}{12+x} =\frac{1}{10}[/tex]

[tex]12+x=40[/tex] (cross multiply)

[tex]x=28[/tex]

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