প্রশ্ন ও উত্তর
The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?
গণিত Age Problems 07 Oct, 2020
প্রশ্ন The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?
সঠিক উত্তর
18 years
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