Calorie Burn Calculation for Swimming Laps

Question
If I swim 36 laps in 60 minutes using the following strokes, how many calories will I burn:
15 laps freestyle
5 sets of the following 4 strokes:
Breast stroke; basic back stroke; side stroke; and back stroke.

Thanks.

Answer
Sisi ---
I've always hated word problems.  :)
Seriously, though ... I'm sorry, but this question is almost impossible to answer -- there are other factors which effect caloric use, such as pace, heart rate, fitness level, etc.  If I was working with you personally, I could give you an exact number.  However, my best guess (which could be totally off, depending on the the above factors) would be around 600 calories.

Hope this information is helpful.  If you have any more questions, feel free to contact me.

Lorena