If the chairs in an auditorium are organized into equal-length rows of 13 chairs, there are 11 left over. If they are organized into equal-length rows of 7 chairs, there are 5 left over. What is the smallest number of chairs that the auditorium could have?

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour