1) There are 45 students in a class. The no. of boys is 5 more than girls. The average weight of boys is 5
more than average weight of girls. The total weight of boys is 100 more than girls. Calculate the average
weight of the class?

2) In a family of 8 of three generation, there are two fathers, two mothers, two brothers, and two male
children. The total age of the female member of the family is 5 less than total age of male member of the
family. What is the difference in the average age of male and female member of the family?

3) Four boxes full of apples are placed one by one in a big box. The average height and length of the small
boxes are in ratio of 5:7. The average of breadth of all boxes is 4 more than average of height. Calculate the
approximate average volume of all four boxes if total height of all boxes is 60 cm.

4) The average score of a cricketer is 100 in 15 matches, if his average score for 7 matches is 10 more than
average score of 8 matches than what is difference in the averages of first 7 matches and last 8 matches if
the cricketer scores 480 runs in last 8 matches?

5) There are 45 students in a hostel. Due to the admission of 15 new students the expenses of the mess
were increased by Rs. 60 per day while the average expenditure per head diminished by Re. 1. What was the
original expenditure of the mess?

6) The arithmetic mean of the scores of a group of students in a test of mathematics was 48. The brightest
20% of them secured a mean score of 75 and dullest 25% a mean score of 30. The mean score of the
remaining 55% is:

7) A man sold an article for Rs. 6800 and incurred a loss. Had he sold the article for Rs. 7600, his gain
would have been equal to half of the amount of the loss that he incurred. At what price should he sell the
article to have 20 % profit?

8) A shopkeeper bought 30 kg of wheat at the rate of Rs. 45 per kg. He sold 30 % of total quantity at the rate
of Rs. 50 per kg. Approximately, at what price per kg should he sell the remaining quantity to make 28 %
profit?

9) The profit after selling a pair of shirts for Rs. 863 is same as loss incurred after selling the same pair of
shirts for Rs. 633. What is the cost price of the pair?

10) The cost of an apple is twice that of a bananas and the cost of a banana is 25% less than that of a guava.
If the cost of each type of fruit increase by 10 %, then the percentage increase in cost of 4 bananas, 2 apples
and 3 guavas is.