সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
The average age of 12 students is 20 years. If the age of one more student is included the average decreases by 1, what is the age of the new student?
The average age of 12 students is 20 years. If the age of one more student is included the average decreases by 1, what is the age of the new student?
- ক. 5
- খ. 7
- গ. 9
- ঘ. 11
সঠিক উত্তরঃ 7
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- Lima is 10 years older than Rima. In 7 years time Lima will be twice as old as Rima. Find Lima's age now?
- The present ages of A and B are in the ratio 6 : 4. Five years ago their ages were in the ratio 5 : 3. Find their present ages.
- Ten years ago, A was half of B in age. If the ratio of their present age is 3 : 4, what will be the total of their present ages?
- Dina is 10 years younger than Mimi. If in 5 years Mimi will be twice as old as Dina, how old will Dina be in 3 years?
- Arif has a brother one-third his age and a sister three times his age. If the combined ages of all 3 children is 5 less than twice the oldest, how old is Arif?
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