Answer:
A is 84 yo
B is 26 yo
Step-by-step explanation:
We know that 1) 4B=A+20 and 2) 1/3 A=B+2
Using equation 1, we get that A=4B-20. We can substitute that into equation 2, and we get 1/3(4B-20)=B+2.
So 4/3B-20/3=B+2
If we put the Bs together we get: 4/3B-B=2+20/3
1/3B=26/3
B=26 years old
A=84 years old
