TCS
Company
Numerical Ability
Averages
Simple question on average age.sth like a, b, c weighted separately 1st a, b, c ,then a& b, then b &c ,then c & a at last abc, the last weight was 167,then what will be the average weight of the 7 reading?
a)95 b)95.428 c)95.45 d)94
Read Solution (Total 7)
-
- the reading of abc is=167
and a,b,c together is=167
and ab + bc+ ca=2*167
so 167+167+334= 668
now 668/7{for avg.}
=95.42857143 - 10 years agoHelpfull: Yes(10) No(1)
- given a+b+c=167
now average=a+b+c+ (a+b)+(c+a)+(b+c)+a+b+c/7
=167*4/7=668/7=95.4 - 10 years agoHelpfull: Yes(4) No(0)
- combined weight of a+b+c=167
we have to find [a+b+c+(a+b)+(b+c)+(c+a)+a+b+c]/7=(4a+4b+4c)/7
[4(a+b+c)]/7=(4*167)/7=95.428 is the answer
- 10 years agoHelpfull: Yes(3) No(0)
- As a+b+c weight = 167 , so 1st 3 ie. a,b,c total weight 167 and ab+ba+ca is = 2x167 , total = 668 . Avg = 95.425.
- 10 years agoHelpfull: Yes(0) No(0)
- Ans (167*4)/7 = 95.428
- 10 years agoHelpfull: Yes(0) No(0)
- please explain ??????/ the weight abc is 167 right, then how can we find that
- 10 years agoHelpfull: Yes(0) No(0)
- (167*4)/7=95.4
- 10 years agoHelpfull: Yes(0) No(0)
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