In a mathematical question it is stated as follows.
On Monday I sold 15 cows and today 5 more than on Monday. How many did I sell today?
The question is one of ambiguity. Does 5 more refer to a separate sale thus only the 5 or does more than mean a total of what is sold today and on Monday?
What would be the best way to phrase the question so that it clearly refers only to the 5 sold today.