Question 114039
LET THE FATHER'S AGE=4X & HIS DAUGHTER'S AGE=X.
4X+6=3(X+6)
4X+6=3X+18
4X-3X=18-6
X=12 YEARS OLD IS THE DAUGHTERS AGE NOW.
PROOF
4*12+6=3(12+6)
48+6=3*18
54=54