Question Detail

The average of six numbers is X and the average of three of these is Y.If the average of the remaining three is z, then

  • x = y + z
  • 2x = y + z
  • x = 2y + z
  • x = y + 2z
Similar Questions :

1. Average of 10 numbers is zero. At most how many numbers may be greater than zero

  • 0
  • 1
  • 5
  • 9

2. A batsman makes a score of 87 runs in the 17th match and thus increases his average by 3. Find his average after 17th match

  • 36
  • 37
  • 38
  • 39

3. The average score of a cricketer for ten matches is 38.9 runs. If the average for first six matches is 42, then average for last four matches is

  • 33.25
  • 32.25
  • 34.25
  • 34.50

4. The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is

  • 40
  • 35
  • 45
  • 55

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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