A total amount of Rs 15000 is allotted for Quizall content writing work. Kausttav can do the work in 20 days whereas Raju can do it in 30 days, and Arnab can do it in 60 days alone. If they work together, How much do the total earnings of Arnab and Raju exceed the earnings of Kausttav?
1
100
2
0
3
50
4
500