nimrahm2006 nimrahm2006
  • 25-11-2020
  • Mathematics
contestada

here are 5 cards: 2,5,7,8,9. one of the cards is removed and then mean average is 6. which card was removed

Respuesta :

murphygavin7039
murphygavin7039 murphygavin7039
  • 25-11-2020

Answer:

9 would be removed i believe

Step-by-step explanation:

Answer Link
lovelycamtu299
lovelycamtu299 lovelycamtu299
  • 25-11-2020
The card 7 should be remove.

Explain:
Assuming X is the total of 4 cards
X/4=6 => X=24
2+5+8+9=24
=> (2+5+8+9)/4=6
Answer Link

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