A. 42 years
B. 44 years
C. 46 years
D. 48 years
Let Fifth person age be x years
Five years ago the average of first 4 persons was 46
Five years ago, the average of first four person = 46
The present average will be 5 years more i.e.
Present average of first 4 persons will be = 46 + 5 = 51
A new person joins then now, and then the average becomes 50
=> [ 4 (51) + x ] / 5 = 50
=> x = 46
Hence, Fifth person's age is x = 46 years