Question

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?

Answer 1

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.

Answer 2

Y= 5x+7

Lina is 35 years old.