A factory produces 250 units of a product every day. If each unit weighs 12 kilograms, how many tons are produced in one week? (Note: 1 ton = 1000 kg)
First, let's find out how many units are produced in a week. We know that there are 7 days in a week, so:

Units per week = Units per day × Number of days
                         = 250 × 7
                         = 1,750 units

Next, let's find out the total weight of these units in kilograms:

Total weight (kg) = Units per week × Weight per unit
                              = 1,750 × 12
                              = 21,000 kg

Now, we need to convert this weight into tons. We know that 1 ton equals 1000 kg, so:

Total weight (tons) = Total weight (kg) / 1000
                                 = 21,000 / 1000
                                 = 21 tons

So, the factory produces 21 tons of the product in one week.