When the sum of a certain amount was distributed among Radha, Sita and Ram in the ratio 2 : 3 : 4 respectively, but by mistake distributed in the ratio 7 : 2 : 5 respectively. As a result, Sita got Rs.60 Less. Find the amount?
ARs. 290
BRs. 300
CRs. 315
DRs. 320