At the plant manufactured 5100 sockets and they were sold in 3 days. In 1 day sold 30% in, to 2 20% the rest. What stake - was sold in the 3rd day

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1) 30·5100/100 (the 100 5100 can reduce:) 1) 30·51/1=1530 (p) sold in 1 day 2)5100-1530=3570 (p) remained 3)20·3570/100 (3570 and 100 it is possible to reduce:) 20·357/10 (20 and 10 it is possible to reduce:) 4) 2·357/1=714 (p) sold in the 2nd day 5)3570-714=2856 (p) sold in the 3rd day to Answer: 2856 sockets.
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