The ratio of the ages of Khushi and her Aunt is 1 : 4 and the ratio of the ages of Khushi's Aunt and her brother is 9 : 1. If Khushi's brother is 5 years younger than Khushi. What will be the age of Khushi's Aunt after 6 years?
1
36 years
2
38 years
3
42 years
4
40 years
5
44 years