If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?

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 20 years. The present age of the husband is:

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 he have in the sixth month so that he gets an average sale of Rs. 6500?

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

The average weight of 8 people increases by 2.5 kg when a new person replaces one weighing 65 kg. What is the weight of the new person?

A man travels a distance at 40 km/h and returns at 60 km/h. What is his average speed for the whole journey?

The average weight of 8 wrestlers is 100 kg. A sumo wrestler joins, making the average 120 kg.
What’s the sumo wrestler’s weight?

The average age of 4 ghosts is 350 years. A new ghost joins who is “fresh” at only 50 years old.
What’s the new average age?

The average height of 7 penguins is 50 cm. One penguin wears a 20 cm tall hat.
What’s the new “average height” if the hat counts?

Average salary of 10 interns is ₹10,000. The manager joins the group and the average becomes ₹50,000.
What’s the manager’s salary?

The average life of 4 batteries is 5 hours. One super battery lasts 25 hours.
What’s the new average if it replaces one battery?

A group of 5 cats eats an average of 3 fish per day. One cat runs away to join a yoga class.
What’s the new average fish per cat per day?