Question: Nancy takes 3 antacids per day when she eats Indian food, 2 antacids per day when she eats Mexican food, and 1 antacid per day otherwise. If Nancy eats Indian three times a week and Mexican twice a week, how many antacids does she take per month? Think carefully first, then make a decision:
First find the total number of antacids Nancy takes after eating Indian food per week: 3 antacids / day * 3 days / week = 9 antacids / week. Then find the total number of antacids Nancy takes after eating Mexican food per week: 2 antacids / day * 2 days / week = 4 antacids / week. Then find the number of days she doesn't eat Indian food or Mexican food: 7 days / week - 3 days / week - 2 days / week = 2 days / week. Then find the total number of antacids Nancy takes per week: 9 antacids / week + 4 antacids / week + 2 antacids / week = 15 antacids / week. Then multiply her weekly antacid consumption by the number of weeks per month to find her monthly consumption: 15 antacids / week * 4 week / month = 60 antacids / month. So the answer is 60.