Cost of travel to Jungfrau with children

Hi...planning a Jungfrau trip from Interlaken.. I will be taking a swiss travel card. This means a 25 % discount for us. What about the fare for my 2 children, aged 13 and 11 yrs? Thanks in advance. This has been an extremely helpful forum

I'm glad we've been useful! The children travel for free because you can get a Swiss Family Card along with your Swiss Travel Pass: myswissalps.com/ swisstravelpass/ price.