The weight of new man
The average weight of 8 men is increased by 1.5 kg when one of the men who weigh 65 kg is replaced by a new man. What is the weight of new man?
The age of teacher
24 students of a class VII decided to find the average age of themselves and their teacher. They calculated it as 15 years. Later on they again calculated the average age of students by excluding the age of teacher. They found this time the average was 1 less than the earlier one. What is the age of teacher? a) 29 years b) 39 years c) 41 years d) 33 years
Minimum marks in the annual examination
The marks obtained by a student of Class XI in first and second terminal examination are 65 and 42, respectively. Find the minimum marks he should get in the annual examination to have an average of at least 65 marks.
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