marfoandria38 marfoandria38
  • 26-03-2020
  • Mathematics
contestada

A woman is 4 times as old as her son.9 years ago,the sum of their ages was 42.Find their present ages​

Respuesta :

jordanlandry20owudll jordanlandry20owudll
  • 26-03-2020

Answer:

36 years

Step-by-step explanation:

Let

Daughter = x

Mother = 3*x = 3x

6years ago? Daughter = x-6

Mother = 3x-6

Sum of ages at this time = (x-6) + (3x-6) = 36

x - 6 + 3x - 6 = 36

4x +(-12) = 36

4x = 36 + 12

4x = 48

x = 48/4 ; 12 years old.

Mother = 12*3= 36 years old.

Check. 12–6= 6;

36–6=30

30+6=36 years.

Answer Link
ebal6804
ebal6804 ebal6804
  • 26-03-2020

Answer:

33

Step-by-step explanation:

Answer Link

Otras preguntas

what alcohol is found in triglyceride?
according to Carnegie what were the revolutionary changes that made it possible for the poor to enjoy what the rich could not before afford?
$12.25 pen set; 60% discount
Z--3/4=6 1/2 Help I have homework
find the slope if it exists, of the line containing the pair (3,4) and (3,-7)
how old do doberman live
how structures of the body relate to its functionsplz help!!!
The substance that gets broken down in a homogeneous mixture is the A. Colloid B. Solution C. Solvent D. Solute
Is 1.4 greater than, less than, or equal to -14/7
factorise completely 2y^2-4y