“Make Your Escape” Room Please help me I’m on level 3 and can’t get past it. 20 points for it

In a ratio of 7:1, Jim would have seven times more money than Krutika. We can write this as shown;
J=7k
We also know that Jim has 66 (sorry don’t have the pounds sign) more $ than Krutika. We can write this as shown.
J=k+66

If we set both of these true equations equal to each other, we get;

k+66=7k

We can subtract k from both sides;

k-k+66=7k-k
(Simplify)
66=6k
(Simplify again)
K=11(pounds)

You could also plug 11 in for k to find Jim’s money, but you don’t need to sooo.

Final Krutika has 11 pounds.