sent 8 identical boxes with nails for two buildings. when on both buildings spent 60 kg on one there were 3 yaschik and on another 2 yaschik. How many nails in one yaschik. I give 52 points

219
1) 2+3 = 5 (boxes) - remained to 2) 8-5=3 (boxes) - spent 3) 60:3 = 20 (kg) of Answer: 20 kg of nails in one box.
179
Answer add