anonymous
  • anonymous
anita has 2 sisters and 3 brothers. the mean of all their ages is 6 yrs. what will their mean age be 10 yrs from now? 20 yrs from now?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
assume a,b,c,d,e are the ages of 2 sisters and 3 brothers a+b+c+d+e=6*5 a+b+c+d+e+x=10*5 =>x=20=>4 years a+b+c+d+e+y=20*5=>y=70=>14 years
anonymous
  • anonymous
first work out the age that they'll be then try to work out the mean....... actually you can't do that because ?! well there is some thing to do with dividing! I think!
dumbcow
  • dumbcow
fyi minnie i answered your question on the chat

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anonymous
  • anonymous
yeah- thanks for that!

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