A work shift is for 8 hours duration: 30 minutes lunch break and two 15 minutes (each) tea breaks
are allowed per shift. If products are to go outafter assembly at the rate of 60 per shaft, and
total assembly time content for a product is 42 minutes then minimum number of work
stations needed is
(a) 8 (b) 12 (c) 6 (d) 5