Question $4$

A $14-$ft$-$wide, $8-$in thick concrete pavement is to be slipformed using $6$ cy batches mixed at a central$-$mix plant.

Each batch is mixed for an average of $2$ minutes and the plant is $65\%$ efficient. Plant production matches paver

production $($cy$/$hr$).$ Paver production is $75\%$ efficient and truck cycle time is $45$ minutes. What is the balanced

number of trucks?

a$.15$

b$.13$

c$.10$

d$.8$

e$.18$