a produces 9000 pencils /hr
b 7000 p/h
2 mst produce 100000 pencils and each can operate for max 8 hrs find least time for machine b
[spoiler]ans = 4[/spoiler]
b 7000 p/h
2 mst produce 100000 pencils and each can operate for max 8 hrs find least time for machine b
[spoiler]ans = 4[/spoiler]












