Abox of bananas weighing 40.0 n rests on a horizontal surface. the coefficient of static friction between the box and the surface is 0.40 and the coefficient of kinetic friction is 0.20.

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).