A forage harvester with a three row head is being used to harvest com for silage. The com was planted in $30in$ rows and yields $16\frac{T}{a}.$ The field speed is $3\mathrm{.}7m\frac{i}{h}r.$ Wagons with a net capacity of $9\mathrm{.}42T$ are being trailed behind the harvester. During an eighthour day, $3hr,$ and $15$ minutes are lost in servicing, tuming, changing wagons, etc. Determine: $($a$)$ Field eficiency, $($b$)$ Theoretical field capacity in acres$/$hr$,($c$)$ Operating material capacity, T$/$hs $($d$)$ Bffective field capacity in acres$/$hr $($e$)$ Effective material capacity, Thrs $($it$)$ Amount of forage harvested in an eight$-$hour day, Tons, $($g$)$ Number of wagon loads per day.