averages Model Questions & Answers, Practice Test for ibps rrb po prelims

After 5 yrs, the age of a father will be thrice the age of his son, whereas five years ago, he was 7 times as old as his son was. What are their present ages?

The batting average for 30 innings of a cricket player is 40 runs. His highest score exceeds his lowest score by 100 runs. If these two innings are not included, the average of the remaining 28 innings is 38 runs. The lowest score of the player is:

The average monthly income of a family of four earning members was Rs. 15,130. One of the daughters in the family got married and left home, so the average monthly income of the family came down to Rs.14,660. What is the monthly income of the married daughter?

The class X of a Vidhyalaya has four sections: A, B, C and D. The average weight of the students of A, B, C together and A, C, D together are 45 kg and 55 kg respectively, while the average weight of the students of A, B, D together and B, C, D together are 50kg and 60kg respectively. Which of the following could be the average weight of the students of all the four sections together?

Three years ago, the average age of a family of 8 members was 30 years If one child is also included in the family, the present average age of the family remained the same. Then the present age of the child is