The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?

গণিত Statistics and Average 07 Oct, 2020

প্রশ্ন The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?

  • ক.
    100
  • খ.
    80
  • গ.
    70
  • ঘ.
    60

সঠিক উত্তর

80

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