(a) We want to see which of this is the lowest value. For:
The lowest value is hence bicycles can be manufactured.
- Wheels: . So, bicycles can be made.
- Frames: bicycles can be made.
- Handlebars: can be made.
(b) We subtract for each parts.
- Wheels: . So, wheels remain (As wheel of is wheel).
- Frames: . So, frames remain.
- Handlebars: . No handlebars remain.