6/5 would convert to 1.2 since 6/5 is going to be a larger number than 1 and the fact that it is 6 over 5 means that it is out of 5 which means that it being 1 over then 5, it will become .2
We then answer 1.2 + 10.35 which is equal to 11.55
Your answer is:
1.2 + 10.35 = 11.55
I hope that helped :-)