Question 356881
s=d+3  ----> d=s-3
w+1=6d ----> w=6d-1
w+10=s+d+3*14



w+10=s+d+42
6d-1+10=s+d+42
6(s-3)-1+10=s+s-3+42
6s-18+9=2s+39
6s-9=2s+39
6s-2s=9+39
4s=48
s=12

d=s-3=12-3=9

d=9

w=6d-1=6(9)-1=54-1=53


Woman 53 yrs old
Son 12 yrs old
Daughter 9 yrs old