Gwen has 3 red erasers, 4 green erasers, 2 black erasers, 5 purple erasers, and 6 yellow erasers in her book bag.

What is the probability Gwen will reach in her book bag and select a purple eraser?
A.
6
14

B.
1
4

C.
5
19

D.
3
20

Question

Gwen has 3 red erasers, 4 green erasers, 2 black erasers, 5 purple erasers, and 6 yellow erasers in her book bag.

What is the probability Gwen will reach in her book bag and select a purple eraser?
A.
6
14

B.
1
4

C.
5
19

D.
3
20

mathstudent55 · Answer

What is the total number of erasers?
What is the number of purple erasers?

johnweldon1993 · Answer

Probability = # of events you want to happen
                   ----------------------------
                    # of total events possible

so how many erasers in all are there?
and how many do you want?

mathstudent55 · Answer

P(purple eraser) = (number of purple erasers)/(total number of erasers)

anonymous · Answer

i want 5 and the possiblity is 14

johnweldon1993 · Answer

"Gwen has 3 red erasers, 4 green erasers, 2 black erasers, 5 purple erasers, and 6 yellow erasers in her book bag."

I see 3 + 4 + 2 + 5 + 6...which = ...?

anonymous · Answer

20 ughh u can tell im tired :)

johnweldon1993 · Answer

lol...okay so total # of erasers = 20...and you want 5...so

P(purple) = 5
                 ---
                  20

Simplify that down a bit to get...?

mathstudent55 · Answer

Great
P(purple eraser) = 5/20, which can be reduced

anonymous · Answer

1/4

johnweldon1993 · Answer

Perfect :)

anonymous · Answer

thanks ik i am :)

johnweldon1993 · Answer

haha conceited! :P great job :)

anonymous · Answer

:) thanks