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Question

Two tailors, A and B, earn Rs 300 and Rs 400 per day respectively. A can stitch 6 shirts and 4 pairs of trousers while B can stitch 10 shirts and 4 pairs of trousers perday. To find how many days should each of them work if it is desired to produce at least 60 shirts and 32 pairs of trousers at a minimum labour cost, formulate this as an LPP.

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Solution

Tailor A Tailor B Minimum Total No.
No. of shirts 6 10 60
No. of pair of trousers 4 4 32
Wage Rs 300/day Rs 400/day

Let A and B work for x and y days respectively to produce required consignment.
x0, y0
Subject to constraints:
Minimum no of shirt = 60
6x+10y60 or 3x+5y30
Minimum no of trouser = 32
4x+4y32 or x+y8

Formation of LPP according to the given statement is as :
Z is the total labour cost
The given L.P problem reduces to:
Minimize Z=300x+400y
Subjected to:
x0, y0,3x+5y30 and x+y8

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