- The average speed of 20 vehicles during a survey was noted as 60 km/h. Later it was observed that one speed was wrongly taken as 72 km/h instead of 62 km/h...
The average marks of 'n' boys is (n + 6) and that of 30 girls is (2n - 10). If the average marks of all students together is 52, find the number of boys.
The number of students (boys + girls) in class 'A' is 96, and the ratio of the number of girls to boys in class 'A' is 2:1. If the average number of boy...
- In a sports club, the ratio of the number of footballs, basketballs, and volleyballs is 3:2:4, respectively, and the average number of these items is 72. W...
A number is such that when it is multiplied by 9, it gives another number which is as much above from 420 as the original number (itself) is below 420. ...
The ages of 5 children are 8, 10, 12, 14 and 16 years. Find their average age.
- There are 45 players in a sports camp with an average age of 26 years. 5 more players join, decreasing the average to 25. Find the average age of the new p...
- The batsman has an average of 32 in 50 innings. His scores in the next 5 innings are 40, 30, 35, 45, and 50. Find his new batting average.
A coder solved problems at an average of x problems per day for the first 25 days. In the next 5 days, they solved at an average of 64 problems per day,...
Average weight of a group of ‘x’ people increased by 2 kg, when a person weighing 70 kg joined the group, while the average weight increased by 3 kg...
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