- A writer completed an average of 120 pages per week for the first 10 weeks. In the next 5 weeks, he completed ‘x’ pages per week, so that his overall a...
- The average age of a group of employees is 45 years. When a new employee aged 60 joins, the average increases by 1 year. Find the total age of the group be...
Average of 10 observations calculated by a student was 60 but when he again went through his observations he realised that he took value of three observ...
The average number of books read by 40 Indian students in a year is 30. If the books read by their librarian are included, the average increases by 2 bo...
The average cost price of 25 pens (having equal cost price) decreased by Rs.4, when one of the pen is replaced by a new pen having cost price of Rs.60. ...
The average cost price of 21 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.55. ...
Average present age of 'A', 'B' and 'C' is 25 years whereas average present age of 'A', 'B', 'C' and 'D' is 27 years. Three years hence from now, ratio ...
The average of the first 7 non-zero multiples of 18 is:
The average age of 33 children and their teacher's age are 25 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
The mean purchase price of items 'X' and 'Y' is Rs. 600. Article 'X' is sold with a 20% profit, while article 'Y' is sold with a 30% profit. Calculate t...
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