You have two bases: one has a pH of 8 and the other has a pH of 10. 10 How much stronger is the pH of ten than the other one?
100 times (alkaline side)
Since pH is on log scale, between pH=1 and pH=2, it is 10 times difference. Formula of pH:
Now your question. pH=8 (1st solution) and pH=10 (2nd solution).
pH=10 is one hundred more alkaline compared to pH=8.