A library has an average of 510 visitors on Sunday and 240 on other days. The av
A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a…
The average salary of all the workers in a workshop is Rs. 8000. The average sal
The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the…
A family consists of grandparents, parents and three grandchildren. The average
A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35…
The arithmetic mean of the scores of a group of students in a test was 52. The b
The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean…
The average of five consecutive odd numbers is 61. What is the difference betwee
The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
The average age of a husband, wife and their child 3 years ago was 27 years and
The average age of a husband, wife and their child 3 years ago was 27 years and that of wife and the child 5…
A cricketer has a certain average for 10 innings. In the eleventh inning, he sco
A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6…
The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr th
The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?
The captain of a cricket team of 11 members is 26 years old and the wicket keepe
The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages…
A boat takes half time in moving a certain distance downstream than upstream. Wh
A boat takes half time in moving a certain distance downstream than upstream. What is the ratio between the rate in still water and…
The average monthly salary of 20 employees in an organisation is Rs. 1500. If th
The average monthly salary of 20 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases…
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km al
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes….