This spinner has 5 equal sections. What are the odds in favor of spinning red or green?
A) 2:3
B) 2:5
C) 3:2
D) 3:5

Question

This spinner has 5 equal sections. What are the odds in favor of spinning red or green?
A) 2:3
B) 2:5
C) 3:2
D) 3:5

lhgraythorn · Answer

Is there a picture or description of the spinner?

ilovepuppies · Answer

Yeah hold on

ilovepuppies · Answer

attachment

mehek14 · Answer

$\dfrac{red+green}{total}=\dfrac{?}{?}$

mathmate · Answer

@ILovePuppies You could also take advantage of my description of "odds" in your previous question: http://openstudy.com/study#/updates/57630f69e4b0144f0835dd6c

ilovepuppies · Answer

O_O.      What the heck
O_O

lhgraythorn · Answer

|dw:1466111151099:dw| there are five colors, so out of five how many are red or green?

ilovepuppies · Answer

1 is green and 1 is red

ilovepuppies · Answer

So 1:3?

lhgraythorn · Answer

So 2 are red or green out of of all of them. thats how many chances there are of getting a red or green, 2 out of 5

ilovepuppies · Answer

2:3

lhgraythorn · Answer

Um, no, there are 5 possibilities, so it wouldnt be 3

ilovepuppies · Answer

Ok? B

lhgraythorn · Answer

do you get it? the question is basically asking:

out of the 5 possibilites, what chance is there of getting red or green

lhgraythorn · Answer

yes, b

mathmate · Answer

@lhgraythorn The question asks for the odds, which is a ratio of probabilities between favorable/non-favorable outcomes, not the probabilities themselves. See description and example at http://openstudy.com/study#/updates/57630f69e4b0144f0835dd6c The OP is supposed to be aware of it.

lhgraythorn · Answer

@mathmate so what would the answer be in this if not b? This question says in favor of, so wouldn't the answer still be B? I'm confused..

mathmate · Answer

@lhgraythorn The correct answer should give the ratio of the two probabilities in favour of Red or Green : against Red or Green Since you have already worked out the former is 3/5, and the latter is 2/5, so it is 3:2. This used to be an easy way for participants of games (gambling, horse racing) etc to compare how much they expect the pay back. For example, if the odds of a particular horse winning is 2:3, then they don't expect the payoff to be a lot. But if the horse's odds are 1:10, they know they expect a good payoff, perhaps 6-8 times the bet (i.e. if the horse wins). Read the link below for detailed explanations and example: http://openstudy.com/study#/updates/57630f69e4b0144f0835dd6c

lhgraythorn · Answer

Oh, okay, I get it, thanks :)

mathmate · Answer

No problem!  You're welcome!  :)