well, if their ages now are x and y, then their ages in 7 years will be x+7 and y+7.
Now just write your equations and solve them.
Lina is now 5 times as old as Bob, but 7 years from now, she will be 3 times as old as he will be then. How old is Lina now?
2 answers
Y= 5x+7
Lina is 35 years old.
Lina is 35 years old.