+0  
 
 #1
avatar+31 
+1

2. 9 * 3 = 27 

 

27 buckets

 

i will be back with more 

 May 18, 2021
 #2
avatar+379 
+2

thanks, just helped u on ur question too!

mworkhard222  May 18, 2021
 #3
avatar+31 
+1

1.  If we set b to the number of total brothers, and s to the total number of sisters, we can write and solve the following system:

b - 1 = s (because the number of total brothers, minus Simon is equal to the number of sisters)

2(s - 1) = b (because twice the number of sisters, minus Sophia is equal to the number of brothers)

Solving for this gives us a total of 4 brothers and 3 sisters, meaning there are 7 total children (assuming all the brothers and sisters are children)


hope this helps (sorry if it took too long)

mitgliedd1  May 18, 2021
 #4
avatar+178 
+1

Let m be the total number of boys in the family, and f the total number of girls. Simon has m-1 brothers and f sisters, while Sophia has f-1 sisters and m brothers.

 

For Simon,

 

m-1 = f ==> m = f+1

 

For Sophia,

 

m = 2*(f-1) ==> m = 2*f - 2

 

Replacing m with f+1:

 

f + 1 = 2*f - 2 ==> f = 3

 

So m = 4, f = 3 from the first equation

 

Checking our work:

 

For Simon, 4–1 = 3; for Sophia, 4 = 2*(3–1)

 

TLDR: four boys and three girls in the family

KINGCASH  May 18, 2021

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