Averages Practice Test 2

What is the average of the following set of numbers?

302, 152, 132, 122, 112 

• 140

• 150

• 170

• 180

The average age of A, B and C is 26 years. If the average age of A and C is 29 years, what is the age of B in a year?

• 25 years

• 28 years

• 21 years

• 24 years

A cricketer scored 180 runs in the first test and 258 runs in the second. How many runs should he score in the third test so that his average score in the three tests would be 230 runs?

• 200

• 252

• 270

• 280

Average of ten positive numbers is x. If each number is increased by 10%, then x :

• Increased by 10

• Increased by 10%

• Increased by 100

• Increased by 100%

Average weight of 10 boys is more than the average weight of 15 girls by 5 kg. If the total weight of the 10 boys is 550 kg, what is the average of the 10 boys and 15 girls together?

• 20 kg

• 21 kg

• 22 kg

• 23 kg

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimation, what is the average of different probable weights of Arun?

• 64 kg

• 66kg

• 67 kg

• 68 kg

Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today . The present age of the baby is: 

• 2 years

• 1 years

• 3 years

• 0 years

The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 kg. The weight of A is:

• 75 kg

• 71 kg

• 72 kg

• 73 kg

The average age of 39 students and a teacher of a Class are 11 years. If the age of teacher is excluded the average age of class is reduced by 1. What is the age of the teacher? 

Answer choices:

• 50 years

• 40 years

• 30 years

• 20 years

Average weight of 11 students is 30 kg. If the average weight increases by 0.5 kg when Suresh, one of the students leaves the group, what is Suresh's weight?

Answer choices:

• 30 kg

• 20 kg

• 10 kg

• 25 kg