GRE
Exam
Numerical Ability
Averages
the average weight of 36 students is 50 kg . it was found later that the figure of 37kg was misprinted as 73kg.waht is the correct average.
Read Solution (Total 5)
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- Total difference in sum of weight of 36 children = 73-37= 36 kg
so difference in average weight of 36 children = 36/36= 1 kg
so actual average weight is 50-1=49 kg - 11 years agoHelpfull: Yes(16) No(1)
- avg wt of 36 students = 50kg
total wt of 36 students = 50*36 =1800 kg
correct total wt of 36 students = 1800-73+37 = 1764 kg
correct avg wt = 1764/36 = 49 - 11 years agoHelpfull: Yes(11) No(3)
- 49 kg
Total misprinted weight = 36 x 50 = 1800 kg
Removing 73 kg and adding 37 kg
=> True total weight = 1800 - 73 + 37 = 1764
=> True average = 1764 / 36 = 49 kg - 11 years agoHelpfull: Yes(5) No(2)
- Ans 49 kg . Average of 36 students is 50 kg , therefore total weight = 36x 50 = 1800kg. 1800 -73(misprinted)+ 37 = 1764 kg . Real Average = 1764/36 = 49 kg
- 11 years agoHelpfull: Yes(3) No(1)
- 1333
new value= 37+36*36=11333 - 5 years agoHelpfull: Yes(0) No(0)
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