Question 1207263
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2/5 of 80 kg is 2*16 = 32 kg.


They are thrown away.  The rest is 80 - 32 = 48 kg.


{{{48/((2/3))}}} = {{{(48*3)/2}}} = 24*3 = 72 packets of 2/3 kg each.    <U>ANSWER</U>
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Solved.