How good do I have to be in maths? I am more keen on languages.

I just wanted to add that there is no need to worry about Finance & Accounting. I am personally rather bad at "normal" mathematics but am doing just fine in finance. You start right from the beginning, so you do not need any special prior knowledge. As Mitchelle says, it's important to keep practising, then it's definitely doable.

As long as you love to practice every day, can remember formulas then you're good to go especially for one of the main domain subjects-Finance and Accounting, which involves Maths in a way.

You're keen on languages, that's good!! Because the IB program also offers languages as one of the specializations, the languages are (Dutch, Spanish, and German!) For more information you can find here by copying the link:

https://www.saxion.edu/programmes/bachelor/international-business/course-content#http ://productie.saxion.edu/programmes/bachelor/international-business/course-content#the-third-and-fourth-year

Hope this helps!