Please help me.

[Riad12]

There is 50% chance that Edmond will go to a fast food restaurant for lunch and 50% chance that he will skip lunch. If he goes to a fast food restaurant there is 60% chance that he will take only a sandwich and nothing else. If he decides not to take a sandwich he will take a burger or a chicken pie. What is the probability that he will take a burger?

 

[Deleted member 4993]

There is 50% chance that Edmond will go to a fast food restaurant for lunch and 50% chance that he will skip lunch. If he goes to a fast food restaurant there is 60% chance that he will take only a sandwich and nothing else. If he decides not to take a sandwich he will take a burger or a chicken pie. What is the probability that he will take a burger?

Is burger a sandwich?

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

READ BEFORE POSTING​

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Please share your work/thoughts about this problem.

 

[Riad12]

Is burger a sandwich?

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

READ BEFORE POSTING​

​

Please share your work/thoughts about this problem.

okay, I have solved the problem. The answer was 10%. But, when I saw the explanation in a book, the book said that the problem can't be solved.

And, why are you referring burger to a sandwich?

 

[Deleted member 4993]

okay, I have solved the problem. The answer was 10%. But, when I saw the explanation in a book, the book said that the problem can't be solved.

And, why are you referring burger to a sandwich?

Because to me, burger is a sandwich - a meat patty "sandwiched" between two pieces of sesame-seed buns.

 

[Romsek]

If you don't know what the probability of him selecting a burger vs. a chicken pie is you can't answer the question.

 

[Romsek]

Because to me, burger is a sandwich - a meat patty "sandwiched" between two pieces of sesame-seed buns.

I can't speak for other countries but in the US we don't refer to hamburgers as sandwiches (even though technically they are).

And well a burger is.... sing it with me! Two all beef patties, special sauce, lettuce, cheese, pickles, onions, on a sesame-seed bun! (I guess technically that's a big mac...)

 

[Deleted member 4993]

I can't speak for other countries but in the US we don't refer to hamburgers as sandwiches (even though technically they are).

And well a burger is.... sing it with me! Two all beef patties, special sauce, lettuce, cheese, pickles, onions, on a sesame-seed bun! (I guess technically that's a big mac...)

However, the problem may not have originated in the US - so I was separating sets from sub-sets.

Technicality - thou name is KHAAAAAN - the engineer.

 

[Steven G]

If someone asked me if a burger was a sandwich I would say yes. I personally would not refer to it as a sandwich. As sir Khan pointed out, a burger is a meat patty between two buns (pieces of bread).

Of course you can't figure this problem out as you don't know the probability between selecting a burger or a chicken pie as Romsek pointed out. You didn't see that?

 

[Steven G]

As to way Khan asked if a burger was a sandwich is because the problem stated if he decides not to take a sandwich he will take a burger or a chicken pie. Now if a burger is a sandwich THEN if he does not chose a sandwich he MUST choose a chicken pie (as he can't choose a burger if it is a sandwich). Since one can reasonably assume that a burger is a sandwich I conclude that the question is not all that clear.

I don't understand how you say the answer is 10%. Can you please show your work?

 

[Riad12]

As to way Khan asked if a burger was a sandwich is because the problem stated if he decides not to take a sandwich he will take a burger or a chicken pie. Now if a burger is a sandwich THEN if he does not chose a sandwich he MUST choose a chicken pie (as he can't choose a burger if it is a sandwich). Since one can reasonably assume that a burger is a sandwich I conclude that the question is not all that clear.

I don't understand how you say the answer is 10%. Can you please show your work?

I thought that there is 50% chance that he will burger and 50% chance he will take chicken pie. So I used 1/2 to represent the probability. I might have been wrong. You can the attachment if you want to see how I did it.

 

[Steven G]

Thanks for explaining how you got 10%. There is absolutely no reason at all to assume that there is a 50% chance of picking the burger over the chicken pie. Why would you think that is reasonable? Why not 80% vs 20% or 15% vs 85%? The problem as given has no answer. Now if it were true that it was a 50-50 chance then your answer is correct.