If I need to drink 8 ounces of juice a day with a total of 640 ounces of juice in the next 80 days and I make 18 ounces of juice every day, what day can I stop

Question

If I need to drink 8 ounces of juice a day with a total of 640 ounces of juice in the next 80 days and I make 18 ounces of juice every day, what day can I stop making juice and still have enough for the remaining days?

Answer 1

When you read a word problem, you need to evaluate what is important for the problem at hand.  If you drink 8 oz per day for 80 days, then you will drink a total of 640 oz.  As a result, you want to know how long you will need to mix 18 oz per day to get at least 640 oz.  As a result, you can divide the needed 640 oz by the 18 oz per day that are made to obtain answer.