The factory produces 770 gaskets per hour
Solution:
Given that, A factory produces gaskets at a constant rate
After 6 hours 4620 gaskets have been produced
To find: Gaskets produced by factory per hour
We have been given that 4620 gaskets is produced in 6 hours. So in one hour number of gaskets produced can be found by dividing 4620 by 6

So per hour, 770 gaskets are produced
Verification:
Gaskets produced in 6 hours = 6 x number of gaskets produced per hour
Gaskets produced in 6 hours = 6 x 770 = 4620
Hence our solution is correct