The ratio of man’s age to his father’s age is 4:5, and the ratio of his age to his son’s age is 6:1. Four years ago these ratios were 11:14 and 11:1, respectively. The ratio of the age of the grandfather to that of the grandson 12 years from now will be:

Options

A. 0.50347222222222
B. 0.75486111111111
C. 0.75347222222222
D. 0.58541666666667

Answer

A