KöMaL 2020 C1604
A farmer brought 1225 packets of seeds to an agricultural fair: 1 packet of 1 gram of seeds, 2 packets of 2 grams, 3 packets of 3 grams, ..., packets of grams of seeds in each - every positive integer to occurred. What was the average mass of seeds in a packet?
Official text KöMaL. Quoted with source.
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