can you plz help me answer this

A

Ahmed tamer

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If a bag contains a number of identical green and blue balls , if one ball is drawn randomly ', the number of the green balls is 5 while the probability that the drawn ball is blue equals 2/3 , then the number of blue ball equal
 
That's very strange English! It reads as if drawing a ball changes the number of green balls.

I'll rearrange it to what I think it must be intended to mean:

A bag contains a number of identical green and blue balls; the number of the green balls is 5. If one ball is drawn randomly, the probability that the drawn ball is blue equals 2/3. What is the number of blue balls in the bag?​

Suppose the bag contains 5 green balls and N blue balls. What would be the probability of drawing a blue ball?

Set that expression equal to 2/3 and solve.
 
I think you missed the point of our guidelines:

Posting Guidelines (Summary)

Welcome to our tutoring boards! :) This page summarizes main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We don't do your homework. We prefer to help...
www.freemathhelp.com

We want to guide you to solve the problem yourself, not to give you answers with no work on your part.

Give it a try. Do what I suggested.
 
Dr.Peterson said:
I think you missed the point of our guidelines:

Posting Guidelines (Summary)

Welcome to our tutoring boards! :) This page summarizes main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We don't do your homework. We prefer to help...
www.freemathhelp.com

We want to guide you to solve the problem yourself, not to give you answers with no work on your part.

Give it a try. Do what I suggested.
Click to expand...
Ok thx for your help
 
Ahmed tamer said:
I think i am dumb but i still dont know how to answer it
Click to expand...

If you are willing to try, then "dumb" is not appropriate. You are learning, so you aren't expected to know ahead of time how to solve every problem -- that's what you're being taught! But to learn, you have to try applying what you have been taught.

We just need to figure out what you know that I can build on, and you have not yet chosen to work with me to do that. I can't steer a boat that isn't moving.

Let's look again at the problem:
Ahmed tamer said:
If a bag contains a number of identical green and blue balls , if one ball is drawn randomly ', the number of the green balls is 5 while the probability that the drawn ball is blue equals 2/3 , then the number of blue ball equal
Click to expand...
Here is my advice:
Dr.Peterson said:
I'll rearrange it to what I think it must be intended to mean:

A bag contains a number of identical green and blue balls; the number of the green balls is 5. If one ball is drawn randomly, the probability that the drawn ball is blue equals 2/3. What is the number of blue balls in the bag?​

Suppose the bag contains 5 green balls and N blue balls. What would be the probability of drawing a blue ball?

Set that expression equal to 2/3 and solve.
Click to expand...
Do you know the basic definition of probability?

If there were 5 green balls, and, say, 7 blue balls (just a supposition to give us something specific to talk about), what would be the probability that a random ball you draw is blue?

Then what if there were 5 green balls and N blue balls. What would the probability be? It will not be a number, but an expression. Just do the same thing you did to answer the first question.

Don't be afraid to try! If you're right, we can move forward, and if you aren't, you'll learn something new.
 
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