Off Topic: The Flood
This topic has moved here: Subject: Help me with this math problem
  • Subject: Help me with this math problem
Subject: Help me with this math problem

There is a school class of boys and girls. The number of boys and the number of girls relate 5:4.

What is the percentage of boys in the class? I would be grateful if you let me know how you solved this problem.


  • 12.17.2012 11:56 AM PDT

Are you for real, OP?

[Edited on 12.17.2012 12:00 PM PST]

  • 12.17.2012 11:57 AM PDT

"The individual has always had to struggle to keep from being overwhelmed by the tribe. If you try it, you will be lonely often, and sometimes frightened. But no price is too high to pay for the privilege of owning yourself."
-Nietzsche

Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.

  • 12.17.2012 11:57 AM PDT


Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.


Seriously do your own -blam!- homework. And if you're going to ask the internet don't ask the flood.

  • 12.17.2012 12:00 PM PDT

Name's Pixel.
There's a 87.7% chance that I'm better than you.
At everything.
Also.
Please message me if you have any objections.
ლ(ಠ益ಠლ)

Ratios?
What? Are you in the 6th grade?

  • 12.17.2012 12:01 PM PDT
  •  | 
  • Intrepid Legendary Member

blarg.

55.5 repeater %.

All you do is add the two numbers together (this is now the denominator) and put the left side of the ratio on top (the numerator), then multiply by 100 to get a percentage.

  • 12.17.2012 12:02 PM PDT

OP - the minimum amount of people in the class has to be 9 (5 + 4)

Therefore the percentage of boys in the class is 5/9 x 100.

  • 12.17.2012 12:03 PM PDT
  • gamertag: [none]
  • user homepage:

I like games and music

20%

  • 12.17.2012 12:03 PM PDT
  •  | 
  • Intrepid Legendary Member

blarg.


Posted by: Delta SWE
20%


Can't tell if serious.

  • 12.17.2012 12:05 PM PDT


Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.

My answer was the same as yours. But according to the book the answer is 56%. I suppose they did an approximation, rounding upwards. That is what made me unsure if I had maybe done something wrong.

There is no need for this negative attitude guys.

  • 12.17.2012 12:08 PM PDT


Posted by: overlordofkill

Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.


Seriously do your own -blam!- homework. And if you're going to ask the internet don't ask the flood.

I don't know what your problem is but why would I not ask the flood? Many people here like mathematics, and you get answers quickly.

Stop being an -blam!-.

  • 12.17.2012 12:19 PM PDT


Posted by: Nebowski

Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.

My answer was the same as yours. But according to the book the answer is 56%. I suppose they did an approximation, rounding upwards. That is what made me unsure if I had maybe done something wrong.

There is no need for this negative attitude guys.


You got confused over rounding? What is this 7th grade?

  • 12.17.2012 12:23 PM PDT
  •  | 
  • Exalted Mythic Member
  • gamertag: [none]
  • user homepage:

Posted by: Nebowski
Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.

My answer was the same as yours. But according to the book the answer is 56%. I suppose they did an approximation, rounding upwards. That is what made me unsure if I had maybe done something wrong.

There is no need for this negative attitude guys.
So is your question just how to get from a fraction to a percentage, then?

  • 12.17.2012 12:25 PM PDT

I am a pharmaceutical scientist. I received my Masters degree in Pharmaceutics from the University of the Sciences in Philadelphia in 2010, after working as a Pharmacist for 4 years. I currently work in King of Prussia, PA, and focus on the analytical chemistry of small molecule APIs. My clients include some of the most well known big pharma companies in the world.


Posted by: Nebowski

Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.

My answer was the same as yours. But according to the book the answer is 56%. I suppose they did an approximation, rounding upwards. That is what made me unsure if I had maybe done something wrong.

There is no need for this negative attitude guys.
Yea, common sense here would dictate that the answer just accounts for rounding to the nearest whole number.

  • 12.17.2012 12:29 PM PDT

Congratulations. You're literate!

5 / (5 + 4) = 5/9 ~ 0.56

  • 12.17.2012 12:31 PM PDT


Posted by: Nebowski

Posted by: overlordofkill

Posted by: Disambiguation
Posted by: Nebowski
What is the percentage of boys in the class?
5/9. Do your own homework to figure out why.


Seriously do your own -blam!- homework. And if you're going to ask the internet don't ask the flood.

I don't know what your problem is but why would I not ask the flood? Many people here like mathematics, and you get answers quickly.

Stop being an -blam!-.


My problem is that maybe you should pay attention in class so you know how to do simple math problems.

  • 12.17.2012 12:37 PM PDT


Posted by: Aythor
Seen a lot of mathematic illiteracy in this thread so I'll clear it up for you.

We can assume X is the amount of boys, Y is the amount of girls

X + Y = Z

Z in this case is the total amount of people in the class

So form an equation in X

5x + 6y = Z9

Simplify that to

-5/4x + 72y = (z-5)(z+4)

Solve for Q

Q = 4/5x + -1/72 = z^2 - 5z + 4z - 20

Solve for X and you should get

55.5%


5 + 4 = 9
5/9 ~ 55.5%

  • 12.17.2012 12:38 PM PDT

"There's this theory that if there were an infinite number of monkeys pecking away at typewriters, they would eventually write the great works of Shakespeare, but thanks to the internet we now know that's not true." -Adam Savage

"Time is not made out of lines. It is made out of circles. That is why clocks are round." -Caboose

NOTE: This is my new primary account. My old account was AgentCOPP1, and I changed it because it was linked to a gamertag that I no longer use.

Everyone in this thread is a pansy and knows absolutely nothing about math.

The answer is obviously 42.

  • 12.17.2012 12:55 PM PDT