The average of 11 results is 50. If the average of the first six results is 49 and that of the last six is 52, the sixth…

A passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average sp…

The average salary of all the workers in a workshop is Rs. 8,000. The average salary of 7 technicians is Rs. 12,000 and …

Average of a, b, and c is 11; average of c, d and e is 17; average of e and f is 22 and average of e and c is 17. Find o…

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was…

The mean monthly salary paid to 75 workers in a factory is Rs. 5680. The mean salary of 25 of them is Rs. 5400 and that …

Average score of a class of 60 students, in an exam, was 43. Average score of the students who had passed is 52 and the …

A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must …