The question is:
If the rate of a certain chemical reaction doubles for every $10$ degree rise in temperature then which is greater:
a) Twice the rate at $10$ degrees
b) Half the rate at $30$ degrees
According to my text they are same. Here is how I am doing it
$\rm Rate = 2\times Temp$
For $10$ degrees: $\rm Rate = 2 \times 10 = 20$ so $2r$ (Twice The Rate) $=40.$
For $30$ degrees: we have $R = 2 \times 30 = 60$ so half would be $30.$
Could anyone tell me what I am doing wrong since they are different?