wong2008jwen
contestada

The product of the ages of a man and his son is 160. In four years time, the man will be four times as old as his son. Find their ages.​

Respuesta :

Answer:

father = 32    s = 5 y/o

Step-by-step explanation:

f s = 160  ====>   s = 160/f

f+4 = 4 ( s+4)  

f + 4 = 4 (160/f +4)

f + 4 = 640/f + 16

f^2 + 4f = 640 + 16 f

f^2 -12f - 640 = 0      Use Quadratic formula to find  f =  32   then s = 5

Otras preguntas