I intend to pursue my undergraduate degree in Mathematics and Physics at Ecole Polytechnique in France. The institution has offered me an interest free loan of 18,000 euros, which has to be repaid three years after I complete my bachelor's degree.
Since I am passionate about basic sciences, I hope to join a five year PhD programme after my degree and this usually comes with a decent scholarship/stipend. Approximate salary for PhD scholars in Europe is about 1300 euros, though this might vary from institution. Right now, I am not sure whether this salary and the one received during Post-Doc might be enough for me to repay these loans and therefore, I wish seek advice on this matter from Personal Finance and Money community here at Stack Exchange.
PS. I also wanted to add that it would be very difficult for my parent to help me pay off the loans as they have recently retired.