Jo + Blake = 62 J + (J+12) = 62 2J + 12 = 62 2J = 62 - 12 = 50 J = 50/2 = 25. ANSWER. Jo is 25 years old.
No, @CROMLIX. That won't help because you're wrong! For you to help, you need to provide correct answers to these people who ask for help!
You should know that!!