Ratio of age of Prachi to age of Sakshi 2 : 3 and average age of Sakshi , Prachi and Rupali is 23. When Arjun joins the group average age of these 4 persons is 25 years. Calculate sum of age Arjun and Rupali, if Rupali is 13 years older than Prachi?
1
60 years
2
50 years
3
40 years
4
can't be determined
5
None of these