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The best way to solve this is to develop one or more equations and then solve for the unknown numbers.

I solved this problem twice using different sets of equations to make sure I was right, and here is what I found:

1) I used the equations x + y = 623, and x = (2/3)y. In these equations, x is the number of girls and y is the number of boys.

Substituting the second equation into the first, I get (2/3)y + y = 623.

Adding the left side together I get : (5/3)y = 623.

Dividing both sides by (5/3) I get 373.8.

This means that x (the number of girls) is 249.2.

2) For the second attempt, I developed the equation: 2x+3x=623. Here 2x is the number of girls, and 3x is the number of boys.

Adding the left side I get: 5x = 623.

Dividing both sides by 5 I get: x = 124.6.

This means that the number of girls (2x) is 249.2. Just like in the first method.

But since you can't have a 1/5 of a girl, the answer must be 249 girls.

Posted on Nov 19, 2009

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There are roughly 3,460,254,000 girls as of April 30.

Posted on May 01, 2012

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Posted on Jan 02, 2017

http://christiannews.net/2017/03/22/male-student-sues-school-district-after-girl-allowed-to-undress-in-boys-locker-room/

Mar 27, 2017 | Computers & Internet

26 (Students) x .46 (46% boys) = approximately 12 boys (11.96)

26 (students) - 12 (boys) = 14 girls

26 (students) - 12 (boys) = 14 girls

Feb 15, 2015 | Computers & Internet

There is a problem with the numbers you quote.

20 x 2/3 = 13.3 boys

You can't have 0.3 of a boy. So round that off to 13 boys. Girls are

20 - 13 = 7 in number. This is the nearest sensible answer.

20 x 2/3 = 13.3 boys

You can't have 0.3 of a boy. So round that off to 13 boys. Girls are

20 - 13 = 7 in number. This is the nearest sensible answer.

Apr 09, 2014 | Computers & Internet

Let g be the number of girls in the first year, and be the number of boys.

b/g=5/4=====> 4b=5g ===> g=4*b/5=4*100/5=400/5=80

Check: b/g=100/80=5/4

b/g=5/4=====> 4b=5g ===> g=4*b/5=4*100/5=400/5=80

Check: b/g=100/80=5/4

Jan 11, 2014 | Office Equipment & Supplies

Let b the number of boys, and g the number of girls.

b/g=2/7 =>**7b=2g**

**g=b+250**

7b=2(b+250)=2b+500

5b=500 ==>**b=100**

g=b+250=100+250=**350**

**Verification**: 100/350=10/35=2/7

b/g=2/7 =>

7b=2(b+250)=2b+500

5b=500 ==>

g=b+250=100+250=

Sep 27, 2013 | Mathsoft Computers & Internet

_ M _ A _ k _

Clues:

1. Girls like it.

2. Boys use it.

3. Parents hate it.

Clues:

1. Girls like it.

2. Boys use it.

3. Parents hate it.

Sep 25, 2011 | Computers & Internet

Jun 29, 2011 | Miscellaneous

142.

435 - 151 = 284

This subtracts the inequality between girls and boys.

Then the rest are split in half equally.

284 / 2 = 141

Hope this helps. Got any more ;)

435 - 151 = 284

This subtracts the inequality between girls and boys.

Then the rest are split in half equally.

284 / 2 = 141

Hope this helps. Got any more ;)

Feb 16, 2011 | Dishwashers

If there are 40 total students, and 25 are boys, then (40-25) of them are girls, or 15.

That means the ratio of boys to girls is 25 to 15, or 25/15

This can be simplified by dividing by 5, so the ratio is 5/3

That means the ratio of boys to girls is 25 to 15, or 25/15

This can be simplified by dividing by 5, so the ratio is 5/3

Jan 16, 2011 | Office Equipment & Supplies

If there are 25 boy in a class of 40 pupils, there are 40 - 25 = 15 girls. The ratio of boys to girls hence is 25:15, or as reduced fraction 5:3 = 1.6666...

Jan 16, 2011 | Texas Instruments TI-30XA Calculator

Oct 21, 2017 | The Office Equipment & Supplies

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