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Quantitative Aptitude

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Bangalore dai...

Question

Bangalore dairy sales Milk in two kinds of packets: Plastic Bag $&$ Tetra Packs. Each of these packets goes through three steps: Filling, Sealing and Labelling. The company has three filling machines, 6 sealing machines and 3 labelling machines. Each of these 12 machines can work for exactly 8 hours in a day. One box of Tetra Packs requires 20 minutes for filling, 1 hour for sealing and 20 minutes for Labelling. The box of Plastic Bags requires 15 minutes for filling, 1 hour for sealing and 10 minutes for labelling. If the dairy has to manufacture only 40 boxes of Tetra Packs then how many machine hours are utilised on that day?

A

2 hrs

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B

66 2/3 hrs

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C

30 hrs

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D

72 hrs

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E

40 hrs

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Solution

The correct option is B 66 2/3 hrs
Each box of Tetra Pack takes 20 minutes for filling, 1 hour for sealing and 20 minutes for Labelling.

Total Machine Hours Utilised = 800 + 2400 + 800 = 4000 = $66 \frac{2}{3}$ hours.
Hence option (b)

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