You know that 15% of a number n is 12. how can you use this to find 30% of n? 45% of n? explain. because 30% of n is equal to [ ] times 15% of n and 45% of n is equal to [ ] times 15% of n, you can write 30% of n=[ ] ×12= [ ] and 45% of n= [ ] ×12= [ ]

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?