Question 170035
S=3B
(S+8)+(B+8)=64
(3B+8)+B+8=64
4B=64-8-8
4B=64-16
4B=48
B=48/4
B=12 AGE OF BETTY NOW.
pROOF:
3*12+8+12+8=64
36+28=64
64=64