Labelling envelopes


Connor had a job putting labels on envelopes. He worked at a steady pace and found that he had put on 450 labels in 1 ½ hours.
 

a)

How many labels did he put on each minute? __________
 

b)

How long did it take him to put on a single label? __________ seconds.
 

c)

At this rate, how many labels will he put on if he works for 7 ½ hours? __________