Hi Bunuel
Thank you for the explanation.
I am not able to follow when we combine the two statements.
For S1 a+b>14 , Can we not have 9+6=15 and in this case the least value of b will be 6 and we get 0.76 which is less than 0.77 and answer is E.
Please help me understand what am I doing wrong?
Appreciate your help.