Let the ages of Anil and Satish be x and 5x respectively.
Then as given, 5x X x = 180
Or 5x^2 = 180, x^2 = 180/5 =36
x = 6 years
So, Anil age is 6 years and Satish age is 30 years.
After 5 years Anil age will be 11 years and Satish age will be 35 years.
Hence the ratio of their age = 35 : 11