In 2 1/4 hours, nick wrote 36 messages. What was his unit rate during that time

Question

In 2 1/4 hours, nick wrote 36 messages. What was his unit rate during that time

Answer 1

It appears you are looking for "hours per message" or hour/message

 

hpm = (2 1/4)/36 = (9/4)/36 = (9/4)(1/36) = 1/16 hours per message

 

If you need to turn that into minutes per message multiply by 60 mins/hour

 

(1/16)(60) = 60/16 = 3 12/16 = 3 3/4 minutes per message

 

If you desire you could turn your 3/4 minutes into seconds by

multiplying by 60 seconds/minute..  (3/4)(60) = 3(15) = 45 seconds

 

Unit rate is 3 minutes 45 seconds per message