# 3 girls and 2 boys have a 4 sum - YouTube Videos

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### Solving ratio problems

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.

Apr 09, 2014 | Computers & Internet

### 100 boys in the first year the ratio of boys to the number of gils in the first year is 5:4 how many girls are there

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

Jan 11, 2014 | Office Equipment & Supplies

### The ratio of the number of boys to the number of girls is 2:7 if there are 250 more girls than boys, how many boys are there?

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

Sep 27, 2013 | Mathsoft Computers & Internet

### What are some excellent activities for girls?

Well I mean I know this awesome website where you could design your own outfits, stores and offer all your products for exclusive cash and it is really fungi LOVE sum cards and I don't really think there is any other activities that are "downloadable" online that are just like sum cards. If anything and I know you'll dislike me responding to like this, you should buy the encounter. Besides, if you buy it, you have a value within to make a consideration on the Sims3.com (or sum cards 2) and then you can get awesome installing for the sum cards from the exchange games for girls online!

Dec 07, 2012 | Samsung Televison & Video

### 7 Letter word : _R_K_S_, Clues : 1.Girls like it. 2.Boys use it.

• 7 letter word _R_K_S_
• 7 letter word girls like it boys use it parents hate it
• er word girls like it boys use it parents hate it
• Jun 29, 2011 | Miscellaneous

### The sum of three is 90.find the number if the second number is 2 more than twice than first and third is two less than the sum of the first two.l

a+b+c = 90
b=2a+2
c= a+ b - 2

substitute the second equation in the third:

c = a + (2a +2 ) - 2 = 3a and use this result in the first equation:
a + (2a +2) + 3a = 90
6a = 88
a = 14.666666
b= 2a + 2 = 27.333333
c = 90 - b - a = 48

now go study by yourself and be a good boy or girl

Jan 15, 2011 | Computers & Internet

### If there are 623 students and the ratio of girls is 2 to 3 boys. how many girls are there?

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.

Nov 19, 2009 | Office Equipment & Supplies

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