Hi,
Aravin will have twice as much money as Ben
Chandran will have 1/4 of what Aravin and Ben have altogether
Let x,2x,(1/4)3x represent money Ben, Aravin and Chandran will have
x+ 2x + .25*3x = $240
3.75x = $240
x = $240/3.75
x = $64, Ben's amount. Aravin with $128 and Chanran with $48
CHECKING our Answer***
64 + 128 + 48 = 240