question:The average weight of 36 men is 50 kg. It was found later that the figure of 37 kg was misread as 73 kg. What is the correct average?
Options:
(A) 49 kg
(B) 51 kg
(C) 50.5 kg
(D) 51.5 kg
(E) None of these
answer:(A)
Stream of consciousness:Correct average = [( 50 x 36) - 73 + 37 )]/36 = 1764/36 = 49 kg.

question:The average age of a family of 6 members is 24 years.If the age of the youngest member is 8 years,what was the average age of the family at the birth of the youngest member?
Options:
(A) 15
(B) 16
(C) 21
(D) 12
(E) 19
answer:(B)
Stream of consciousness:Present age of total members = 6 X 24 = 144
8 yrs back their ages were = 6 x 8 = 48
Ages at the birth of youngest member = 144 - 48 = 96
Therefore, avg age at the birth of youngest member = 96/6 = 16.

question:Efrida and Frazer who live 15 miles apart, meet at a restaurant that is directly north of Efrida's home and directly east of Frazer's home. If the restaurant is two miles closer to Efrida's home, than to Frazer's home, how many miles is the restaurant from Frazer's home?
Options:
(A) 6
(B) 7
(C) 8
(D) 10
(E) 13
answer:
(E)
Stream of consciousness:It's a simple geometry problem. Look at the diagram below: