City Bikes employs mechanics to keep the bikes in good working order and looking well.

When a mechanic has worked on a bike, he $/$ she records the hours worked on a bike on a date,

giving a description of what was done and the outcome of the repair. When bike faults are

reported, they are categorized by fault type $$ e$.$g$.$ 'Elec'. Each fault type has a type description.

In addition to this, the specific fault has a description. Using a copy of the weekly maintenance

report, as shown in Table $2($see next page$),$ do the following: