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Total mass of nuts at first -> 12u

  Mass before Change Mass after
Cashew nuts 5u + ¼ 5u + ¼
Peanuts 7u 3/8 7u – 3/8

 

7u – 3/8 = 5u + ¼

2u = 5/8

u = 5/16

5u = 25/16 = 9/16 kg

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