Given that each month in reno has the same average rainfall as on August. But the value of the rainfall is not given.
So let's assume that amount of rainfall in August month = x
Now we have to find the total amount of rainfall after 12 months so we will just need to multiply the amount of rainfall by number of months (12) which will be 12 times x or just 12x.
Hence final answer is 12x.
If the amount of rainfall in month of August is given then you can plug that value in place of x to get the answer.
