Mix and yield variances Flathead Music uses two different types of labour. In the last production period, they used $4,600$ hours of technician I time and $2,200$ hours of technician II time. The standard pay rates are $$15$ per technician I hour and $$18$ per technician II hour. At Flathead Music the standard is to use $1\mathrm{.}5$ hours of labour per unit produced; $1$ hour of technician I and $0\mathrm{.}5$ hour of technician II time. During this production period $4,500$ units were produced.

REQUIRED

a$.$ Calculate the mix and yield variances for technician I.

b$.$ Calculate the mix and yield variances for technician II$.$

c$.$ Calculate the total mix and yield variances