I am completely lost

  1. Three girls are preparing information packets about an upcoming fundraiser event.

• Nicole prepared 270 packets in 45 min.

• Hillary prepared 450 packets in 1.5 h.

• McKenzie prepared 280 packets in 1 h and 10 min.

AWho works the fastest? Explain how you solved this problem.
BEach girl worked another 2 h at her same rate. Who made the most packets that day? Explain how you solved this problem.