Can you help me with my Math word problem. It involves Math Reasoning.

Question

If you expect 600 people to buy tickets to a hip hop concert.The box office opens 30 minutes before the show.  How many ticket sellers do you need in order to sell all 600 tickets in 30 minutes.  Hint: It takes 30 seconds to sell one ticket. 

Answer 1

If it takes one person 30 seconds to sell 1 ticket, then that person can sell 2 tickets per minute. We know this because we multiple 30x2 which equals 60. That means that one person can sell 60 tickets in 30 minutes. So, then you divide 600/60=10. Since 600 tickets have to be sold in 30 minutes, we have to divide it by 60 which gives us 10. 10 ticket sellers need to be present to sell 600 tickets in 30 minutes. :)