Ok so to find how many seconds it took for someone to make lunch, you need to know how many seconds are in a minute which is 60. Now knowing this information, you have to multiply 60 (which is equal to 1 minute) by 15 to get that it takes Betsy 900 minutes to make lunch and in this case, B is the correct answer. Hope I helped, if you have any questions, feel free to ask!
