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The average marks scored by 20 boys and 45 girls are 88 and 94 respectively. Find the average marks scored by all the students together. (Answer should ...
Nora claims her age is between 18 and 22 years. Her grandmother says Nora's age is between 20 and 24 years. Her aunt thinks her age is between 19 and 21...
The average number of books on history, polity and geography in a library is 110, and the average number of books on history and geography is 120. If th...
The average of the first and second numbers is 45, while the average of the second and third numbers is 55. If the sum of the first and third numbers is...
The average marks of all the students decreased by 2 when it was found that marks of one of the student were wrongly interpreted as 80 instead of 40. Fi...
The average age of a group of four children is 11 years. From the group, one child, whose age was 6 years more than the average age, left. Four new chil...
The average cost price of 13 pens (having equal cost price) decreased by Rs.3, when one of the pen is replaced by a new pen having cost price of Rs.60. ...
A company has 12 employees, including 8 engineers and 4 managers. The average salary of the engineers is E rupees, and the average salary of the manager...
Average of 20 numbers is 90. Average of first 8 numbers is 103 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numb...
Average age of a class of 28 students is 10 years. Average age of the class is increased by 12 months if the age of the teacher is included. Find...
