Afactory has two types of machines.
•the factory has 6 cutting machines and 4 stamping machines.
•each cutting machine cuts 105 parts every 3 minutes
•each stamping machine stamps 24 parts every 20 seconds

part a
how many parts can all 6 cutting machines cut in 1 minute
a. 105 parts
b. 140 parts
c.210 parts
d. 315 parts

part b
the factory needs to stamp 4,320 parts. how many minutes will it take for all 4 stamping machines to stamp 4,320 parts?
a.10 minutes
b. 15 minutes
c. 45 minutes
d. 60 minutes

feel free to take your time answering! an explanation would be appreciated!