Respuesta :

mhanifa

Answer:

  • 45 and 72

Step-by-step explanation:

Let the ages be r and m

We have:

  • r + m = 117
  • 5r = 9 + 3m

Substitute m in the second equation and solve for r:

  • m = 117 - r
  • 5r = 9 + 3( 117 - r)
  • 5r = 9 + 351 - 3r
  • 5r + 3r = 360
  • 8r = 360
  • r = 360/8
  • r = 45

Then m is

  • m = 117 - 45 = 72

Otras preguntas