maths
posted by Anonymous .
Robin says , 'If Jai gives me Rs. 40, he will have half as much as Atul , but if Atul gives me Rs. 20, then the three of us will all have the same amount. ' What is the total amount of money that Robin, Jai and Atul have between them ??
please explain ?????

j40 = 1/2(a)
r+20 = a20
a20 = j
Robin has 80
Atul has 120
Jai has 100