a group of friends tom,tim,dick,diana,harry and harriet go out to a fair three hundred meters from the me mdonald which is five kms away.the y see weighing machine and decided to have some fun.however the girl refuse to step on the weighing machine.so tom,dick and harry weigh themselves in a particular order.first tom and dick and harry weigh themselves individually.and then tom,dick and harry ,tom and harry and then tom and dick and harry together.the recorded weight for the last measure is 158kgs,then the avg total of the 7 measure is
option
a) 111.86
b) 52.67
c) 90.29
d) 67.71

• =>{(T)+(D)+(H)+(T+D)+(D+H)+(T+H)+(T+H+D)}/7
  =>4(T+H+D)/7
  =>4(158)/7
  =>90.29
• 11 years agoHelpfull: Yes(26) No(0)
• (c)90.29.....4(a+b+c)/7=4*158/7
• 11 years agoHelpfull: Yes(3) No(0)