Losing 10 pounds in a month means losing 2.5 pounds per week. That translates to a calorie deficit of 1250 kcal per day.
Assuming your BMR is 1800 kcal. Your daily intake allowance would be 550 kcal. A safe diet would be eating at least 1200 kcal. That means you should do 650 kcal of exercise.
Exercising that much would be tough though.
Don't eat junk food or drink sodas and exercise.