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Answer

5 1/6 – 1 unit = (2 1/2 – 1 unit) x 3
31 – 6 units = 45 – 18 units
1 unit = (45 – 31)/(18 – 6) = 1 1/6

Ans : 1 1/6 kg

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This is a Before After question.

   Before   Transfer   After   
Beef   5 1/6 – 1u 5 1/6 – 1u 
Mutton  2 1/2  – 1u 2 1/2 – 1u
       

(5 1/6 – 1u) / 3  = (2 1/2 – 1u) / 1

5 1/6 – 1u = 15/2 – 3u

3u – 1u = 15/2 – 31/6

2u = 45/6 – 31/6 = 14/6

1u = 14/6 ÷ 2 = 7/6 = 1 1/6 kg

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