Question 161177
M-10=5(S-10) OR M=5(S-10)+10
M=3S
5(S-10)+10=3S
5S-50+10=3S
5S-40=3S
5S-3S=40
2S=40
S=40/2
S=20 AGE OF SON NOW.
M=3*20=60 AGE OF MOM NOW.
PROOF:
60-10=5(20-10)
50=5*10
50=50