Tailwind. Inc., produces high-quality but expensive training shoes for runners.

Question

Tailwind. Inc., produces high-quality but expensive training shoes for runners. The Taihind shoe, which sels for $210contains both gas-and liquid-filed compartnents to provide more stability and better protection against knee, loot, and back injuries Manufacturing the shoes requires 10 separate tasks. There are 400 minutes available for manufacturing the shoes in the plant each day Daily demand is 64 The informatian far the tasks is as folows Fig. 1 Tas Time (mins C, D Fig. 2 E. H a-b) The correct precedence relationship with ons of tha possible assignments of tasks using tha "ranked positioned weight" to workstations is shown in Fig. 3 c) The efficiency ofthe assembly line with 5 workstations shown in the figure chosen above-86 4 % en ar your na panss as a percentage ou ded o one decimal plsce) Fig. 3 d) The idle time for the assembly Ine per cycleminute's) (enter your response ss s whole number)

Explanation / Answer

64 units to be produced in 400 minutes. So, the required cycle time should be less than or equal to (400/64) = 6.25 minutes.

a-b)

So, Figure 3. is correct

c)

Efficiency = Total flowtime / (no. of stations x cycle time) = 27 / (5*6.25) = 86.4%

d)

Idle time per cycle = (1 - Efficiency) x (no. of stations x cycle time) = (1 - 0.864) x (5*6.25) = 4.25 minutes

Station Task Time (Minutes) Time left (Minutes) Ready tasks (positional wt) A(27) 1 A 1 5.25 B(15),F(16) F 3 2.25 B(15),G(13) G 2 0.25 B(15),H(11) 2 B 3 3.25 H(11),C(8),D(10) C 2 1.25 H(11),D(10) 3 H 6 0.25 D(10) 4 D 4 2.25 E(6) E 1 1.25 I(5) 5 I 2 4.25 J(3) J 3 1.25

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