KINGCASH

https://web2.0calc.com/questions/ratios_29

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

Let Charlie, Don and Egan have c, d and e number of stamps initially.

At the end, all 3 will have 60 stamps each. So after giving away 1/3 of his stamps, Charlie is left with 2/3c stamps. Similarly, Don is left with 3/4d stamps.

Now. 2/3c=60 => c=90

3/4d=60 => d=80

Thus, e= 180-(c+d)= 10

Verification: 1/3c + 1/4d + e = 60

Ans: 90, 80 and 10

Shirt + tie = 43 ____ 1st equation 

4 Shirt + 2 tie = 152 _____ 2nd equation

2 shirt + 2 tie = 43 * 2 ___ 1 * 2

2 shirt + 2 tie = 86 _____ 3rd equation 

(4 shirt + 2 tie) -- (2 shirt  + 2 tie) =  152 - 86         ____ 2nd -- 3rd

                                        2 shirt   = 66

                                           shirt = 33

                                                      ---

k=5s and s+18=k-18or k=s+36 so now's+36=5s or 4s=36 or s=9,so Sam had 9,Kabir had 5*9=45 and total 9+45=54 candy .

Simple equations

let the number of flags with mateo br x

that means number of flags with sam = 3/5 of x or 3x/5

now mateo gives 3 to sam to make the flags equal

that means now mateo has x-3 flags

and sam has 3x/5 + 3 flags

also these two things are equal now

so we can say

3x/5 + 3 = x-3

3x/5 - x = -3 - 3

-2x/5 = -6

we can cut the negative signs both sides now

2x/5 = 6

2x = 30 and that means x = 15

so mateo had 15 flags in starting and sam had

(3 x 15) / 5 = 9 flags

Umm what's going on here?

I cannot see the picture.