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In a college, there are 800 faculty members, out of which $60\%$ are females. The average height of males is 150cm, and the average height of females is 170 cm . What is the average height of the entire faculty ?

The average age of group $A$ consisting of 25 students is 18 years. The average age of group B consisting of 50 students is ' x ' years. The combined average age of both groups together is 22 years. What is the value of ' $x$ '?

The average weight of Ashish, Kiran and Mahesh is 46 kg. If the average weight of Ashish and Kiran be 40 kg and that of Kiran and Mahesh be 43 kg, then the weight of Kiran (in kg) is:

The average marks of the first 12 students in a class was 33 , and the average marks of the next 8 students of the class was 45 . What are the average marks of the class? (correct to one decimal place)

The average weight of Tushar, Salil and Mukund is 46 kg . If the average weight of Tushar and Salil be 40 kg and that of Salil and Mukund be 46 kg , then the weight of Salil (in kg) is:

In a class, the average score of boys is 75 with 20 boys and the average score of girls is 85 with 30 girls. What is the overall average score of the class?

A bullet train covers a fixed distance in 30 minutes at an average speed of 360 km/h. Due to track maintenance, it needs to be diverted, increasing the distance by 25%. If the train needs to arrive at its destination on time (i.e., in 30 minutes), what should its new average speed be in km/h?

The average of a certain number of quantities is 48. If 6 is added to each quantity, what will be the new average?

A cyclist travels from City A to City B at an average speed of 40 km/h and takes 8 hours. If they want to complete the same journey in 5 hours, by what amount (in km/h) must the average speed be increased?

The average weight of 13 people is 65 kg. If one person leaves and the new average becomes 65.5 kg, what is the weight of the person who left?

The average of 8 numbers is 56. When one number is removed, the average becomes 54. What number was removed?

The average salary of 20 workers in a factory is ₹48,000. If the salary of a supervisor is added, the average rises to ₹49,500. What is the supervisor's salary?

The average of a certain number of quantities is 38. If 7 is added to each quantity, what will be the new average?

A cricketer has played 10 innings with an average score of 50. In the next innings he scores 110. What will be the new average?

In a company, the average salary of 3 junior employees is ₹25,000 and that of 2 senior employees is ₹50,000. What is the combined average salary?

An investor tracks 6 stocks. Five of them have an average return of 7%. If the overall average return is 10%, what was the return on the sixth stock?

Three groups of students have average marks 60,70 , and 80 respectively. The number of students in these groups are 30,50 , and 30 . What is the combined average of all students ?

A teacher calculated the average marks of 20 students in a test as 65 . Later, she found that the marks of one student were wrongly entered as 45 instead of 85 . After correcting the error, what is the correct average mark of the class?