You can lose the 10 lbs easily by going out for a run at least twice a day. You can also lose weight fast by eating foods that are low in calories a lot of times a day. This will cause high metabolism and thus burn a lot of calories.
Interval Exercises, like sprint for 30secs (as hard as you can) and walk or jog for 30 secs and do that about 15 times for a 15 minute workout. You can get the best results with intervals. Also balancing your diet like eating LESS sugar and not eating fat with carbs will help you.