The average weight of a group of 75 girls was calculated as 47 kgs. It was later discovered that the weight of one of the girls was read as 45 kgs. Whereas her actual weight was 25 kg. What is the actual average weight of the group of 75 girls? (Rounded off of two digits after decimal)

  • 46.73
The average age of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of the remaining 14 students?
  • 19 years
If the arithmetic mean of seventy-five numbers is calculated, it is 35. If each number is increased by 5, then the mean of new numbers is?
  • 40

Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is?

  • 2 years
The average of 6 numbers is 7. The average of three numbers of them is 5. What will be the average of the remaining numbers?
  • 9


The average of 4 positive integers is 59. The highest integer is 83 and the lowest integer is 29. The difference between the remaining two integers is 28. Which of the following integers is the highest of the remaining two integers?

  • 76
Four years ago, the average age of A and B was 18 years. At present the average age of A, B, and C is 24 years. What would be the age of C after 8 years?
  • 36 years
The average temperature for the first four days of a week is 40.2°C and that of the last four days is 41.3°C. If the average temperature for the whole week is 40.6°C, then the temperature on the fourth day is?
  • 41.8°C