The average of 6 quantities is 8. The average of 4 of them is 5. What is the avg. of the remaining 2 numbers?

• Sum of 8 quantities = Total No of quantities X Average of them
  = 6 X 8 = 48
  Sum of 4 quantities = 4 X 5 = 20
  Sum of 4 Quantities + Sum of 2 Quantities = Sum of 6 Quantities
  20 + Sum of 2 Quantities = 48
  Sum of 2 Quantities = 28
  Average of 2 Quantities = Sum of 2 Quantities / 2
  = 28/2 = 14
• 10 years agoHelpfull: Yes(4) No(1)
• 14
  
  Average of remaining 2 numbers=(Total of 6 numbers - Total of 4 numbers)/2
  =(6*8 - 4*5)/2= 28/2 =14
• 10 years agoHelpfull: Yes(1) No(0)
• 14
  
  (x1+2+3+4+5+x6)/6=8 ---1
  
  (x1+2+3+4)/4=5
  
  (x1+2+3+4)= 20 ----2
  
  From 1&2
  
  (20+x5+x6)/6=8
  
  (x5+x6)/2===14.
• 10 years agoHelpfull: Yes(1) No(1)
• =>A6/6=8......(i)
  =>A4/4=5....(ii)
  .
  =>(A4+A2)/6=8 from (i)
  =>(20+A2)=48 FROM (ii)
  =>A2=24
  =>A2/2=12 is the avg. of the remaining 2 numbers
  where Ai=sum ofi numbers
• 10 years agoHelpfull: Yes(0) No(3)
• we have 6 quantities a b c d e f ok..avrg of a b c d is 5..means a+b+c+d=20 ok
  thn a+b+c+d+e+f=48 /...so e+f=48-20 = 28..ok
  thn reaming two..e+f=28..we write dis like as ..e+f/2 = 14...this is the avrg of remaing two....
  so answer is 14..
• 10 years agoHelpfull: Yes(0) No(1)
• sum of 8 quantities =6*8=48
  sum of 4 quantities =4*5=20
  therefore ,
  sum of 2 quantities =48-20
  =28
  average of 2 quantities =28/2
  =14
• 10 years agoHelpfull: Yes(0) No(0)
• Let the average be x
  8*6=2*x+4*5
  x=(48-20)/2
  x=14
• 9 years agoHelpfull: Yes(0) No(0)
• avg =sum/total quantity
  6=sum/8=48
  same manner
  4*5=20
  diff=48-20=28
  avg=28/2=14
• 9 years agoHelpfull: Yes(0) No(0)