Question

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.​

Answer 1

father = 32 s = 5 y/o

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