The amount of shampoo required by Morgan each week to bathe her dog = 2 oz So The amount of shampoo required by Morgan in 7 days to bathe her dog = 2 oz The amount of shampoo remaining after 4 weeks = 34 oz So the amount of shampoo remaining after (4 * 7) days = 34 oz The amount of shampoo remaining after 28 days = 34 oz The amount of shampoo that Morgan uses in 28 days = (2/7) * 28 oz = 2 * 4 oz = 8 oz Then 8 oz of shampoo is required by Morgan in = 28 days Then 34 oz of shampoo will be used in = (28/8) * 34 days = 7 * 17 days = 119 days So The total number of days before the bottle becomes empty = 119 + 8 oz = 127 days
