John is twice as old as Mary and half as old as Tonya. If Tanya is 60, what is their average age?
Ҷон ду маротиба калонтар аз Мэри ва ним маротиба калонтар аз Тоня аст. Агар Тоня 60-сола бошад, миёнаи синну соли онҳо чанд аст?
How old is John? ** John is 30 because 60 / 2 = <<60/2=30>>30
How old is Mary? ** Mary is fifteen because 30 / 2 = <<30/2=15>>15
How old are they? ** Their total age is 105 because 60 + 30 + 15 = <<60+30+15=105>>105
What is their average age? ** Their average age is 35 because 105 / 3 = <<105/3=35>>35
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How old is John? ** John 30-сола аст, зеро 60 / 2 = <<60/2=30>>30  
How old is Mary? ** Мэри 15-сола аст, зеро 30 / 2 = <<30/2=15>>15  
How old are they? ** Синни умумии онҳо 105-сола аст, зеро 60 + 30 + 15 = <<60+30+15=105>>105  
What is their average age? ** Синни миёнаи онҳо 35-сола аст, зеро 105 / 3 = <<105/3=35>>35  
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