+0  
 
0
45
2
avatar+124 

Mental Math  The ratio of

girls

to

boys

at a movie is

8 : 3.

If there are

9

boys​,

how many

girls

are at the​ movie?

There are

 

girls

at the movie.

 Apr 15, 2021
 #1
avatar+118586 
0

3/11  are  boys

 

So

 

(3/11) *  ( total number)  =  9

 

total number =  9 ( (11/3)  =   33

 

So

 

33  - 9   =   24  are girls

 

 

cool cool cool

 Apr 15, 2021
 #2
avatar+1203 
+2

3 : 9 = 8 : x

3x = 72

x = 24

 Apr 15, 2021

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