IMPORTANT QUESTIONS ON AVERAGE - SET 2

Question 1

In a family, there are 6 members with average age 26 years. If the age of the youngest member be 5 years, the average age of the family at the birth of the youngest member was ?

   A   18 years

   B   21 years

   C   22 years

   D   24 years

   E   None of these

Question 2

In a Boys hostel, there were total of 40 students. The expenses of the hostel mess were increased by Rs.124 per day due to 12 new admissions in the hostel. And the average expenditure per head diminished by Rs 2. What was the original expenditure of the hostel mess ?

   A   Rs.660

   B   Rs.690

   C   Rs.720

   D   Rs.760

   E   Rs.800

Question 3

The average age is 19 years of a class. While the average age of girls is 18 and the average age of boys is 21. If the number of girls is 16 then find the total number of students in the class.

   A   8

   B   10

   C   12

   D   16

   E   None of these

Question 4

In a family, there are 6 males and a few females; the average monthly consumption of wheat per head is 9 kg. If the average monthly consumption of wheat per head be 12 kg in the case of males and 7 kg in the case of females, find the number of females in the family ?

   A   6

   B   9

   C   12

   D   15

   E   None of these

Question 5

Rahul is a cricket player and his batting average for 17 innings is 50 and the difference between the runs of best inning and worst inning is 74. If these two innings are not included, then the average becomes 48 for 15 innings. What is the best score of the made by the Rahul ?

   A   86

   B   95

   C   102

   D   108

   E   None of these