Keanu was surfing towards the shore at a speed of 20 miles per hour.  A shark was swimming alongside him, riding the same wave, when it doubled its speed and moved away from Keanu.  There was a pilot fish swimming alongside Keanu and the shark, and when the shark increased its speed, the pilot fish also increased its speed and moved away from Keanu, but only increasing its speed by half as much as the shark had increased its speed by.  What speed, in miles per hour, was the pilot fish swimming when it moved away from Keanu?
Киану бо суръати 20 мил дар соат ба соҳил шенг мекард. Як акула дар паҳлӯи ӯ шенг мекард, ки ҳамон мавҷи яксонро савор буд, вақте ки он суръати худро дучанд кард ва аз Киану дур шуд. Як моҳии пилот дар паҳлӯи Киану ва акула шенг мекард, ва вақте ки акула суръати худро зиёд кард, моҳии пилот низ суръати худро зиёд кард ва аз Киану дур шуд, аммо танҳо суръати худро нисфи он миқдор, ки акула суръати худро зиёд кард, зиёд кард. Суръати моҳии пилот дар мил дар соат чӣ гуна буд, вақте ки он аз Киану дур шуд?
How fast did the shark go? ** The shark went from 20 miles per hour to a speed of 2*20=40 miles per hour.
How fast did the shark go? ** The shark increased its speed by 40-20=<<40-20=20>>20 miles per hour.
How fast did the shark go? ** Half of the shark's increase in speed is 20/2=<<20/2=10>>10 miles per hour.
What speed, in miles per hour, was the pilot fish swimming when it moved away from Keanu? ** Thus the pilot fish had increased its speed to 20+10=<<20+10=30>>30 miles per hour.
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How fast did the shark go? ** Тӯпӣ бо суръати 20 мил дар соат ба суръати 2*20=40 мил дар соат рафт.
How fast did the shark go? ** Тӯпӣ суръати худро 40-20=<<40-20=20>>20 мил дар соат зиёд кард.
How fast did the shark go? ** Ниме аз афзоиши суръати тӯпӣ 20/2=<<20/2=10>>10 мил дар соат аст.
What speed, in miles per hour, was the pilot fish swimming when it moved away from Keanu? ** Аз ин рӯ, моҳӣ-пилот суръати худро ба 20+10=<<20+10=30>>30 мил дар соат расонд.
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