Ustyugova asked Krokhalev for a mobile phone, because, according to her, she urgently needed to call her mother in the hospital, and the battery was dead in her phone. Krokhalev fulfilled the request. However, Ustyugova immediately handed the phone to her accomplice Ryzhkov, with whom he disappeared.
After payment you will be available a link to the solution of this problem in the file of MS Word. It should be noted that the problem solutions put up for sale were successfully handed over in the period 2009-2019 and could be outdated. However, the general algorithm will always remain true.
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