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Average age of boys in a class is 16 years and average age of girls is 15 years, what is the average age of all

  • 15.5
  • 15
  • 16
  • Cant be computed
Similar Questions :

1. Marks of a student were wrongly entered in computer as 83, actual marks of that student were 63. Due to this mistake average marks of whole class got increased by half (1/2). Find the total number of students in that class.

  • 25
  • 30
  • 35
  • 40
  • 45

2. Average weight of 10 people increased by 1.5 kg when one person of 45 kg is replaced by a new man. Then weight of the new man is

  • 50
  • 55
  • 60
  • 65

3. Average of five numbers is 27. If one number is excluded the average becomes 25. The excluded number is

  • 35
  • 45
  • 55
  • 65

4. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is

  • 54.48
  • 54.68
  • 54.60
  • 54.58

5. A motorist travel to a place 150 km away at an avearge speed of 50 km/hr and returns ar 30 km/hr.His average speed for the whole jouney in km/hr is

  • 36.5 km/hr
  • 37.5 km/hr
  • 35.5 km/hr
  • 34.5 km/hr
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