Question

menu has a collection of 50 pens. she has 20 blue pens and 30 black pens. find the percentage of blue and black pens.

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Answer 1

Step-by-step explanation:

"assuming no replacement"

"total number of pens "=5+3+2=10

P(color(red)"red")=5/10=1/2

P("another"color(red)" red")=4/9

rArrP(color(red)"2 reds")=1/2xx4/9=2/9

P(color(blue)"blue")=3/10

P("another "color(blue)"blue")=2/9

rArrP(color(blue)"2 blues")=3/10xx2/9=1/15

P(color(green)"green")=2/10=1/5

P("another "color(green)"green")=1/9

P(color(green)"2 greens")=1/5xx1/9=1/45

rArrP(color(red)"2 reds")" or " P(color(blue)"2 blues")" or " P(color(green)"2 greens")

=2/9+1/15+1/45

Answer 2

Answer:

40 percentage of blue pens

60 percentage of black pens