Six people are standing in line for concert tickets. Their average age is 27. The average age of the four people in line is 23. The average age of the last three people is 34. How old is the fourth person in line?

Total number of years for the 6 pople = 27*6 = 162 years

total number of years for first 4 people = 4*23 = 92 years

total numbers of years for last 3 = 102 years

total number of yeras for last 2 people = 162-92 = 70 years

age of 4th person in line = 102 - 70 = 32