Fifteen years ago, Riya’s mother was thrice of Riya’s age and two years ago Riya’s mother was twice of Riya’s age. What is the present age of Riya’s mother?
1
40 years
2
35 years
3
45 years
4
54 years
5
None of these
Fifteen years ago, Riya’s mother was thrice of Riya’s age and two years ago Riya’s mother was twice of Riya’s age. What is the present age of Riya’s mother?