Sandra prepared 15 kilograms of dough after working 3 hours. How many hours did Sandra work if she prepared 20 kilograms of dough? Solve using unit rates.
hours

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?