Every week, Linda must stuff 1000

Question

envelopes. She can do the job by herself in 6 hours. If
Laura helps, they get the job done in 5�
1
2� hours. How long
would it take Laura to do the job by herself ?

Answer 1

What does this part mean?

Laura helps, they get the job done in 5�
1
2� hours.

Please fix.

Answer 2

41/2miles away would i arrived on time to start work 11 am