A sum of money is divided between Mohan and Rohan in the ratio 5:7. If Rohan's share is Rs.665, then find the total amount.
Let the sum of money Rs x.
The sum of money is divided in the ratio of 5:7
∴ Rohan's share =712 of x.
Rohan's share (given) =Rs 665
∴712x=665
x=12×6657
x=1140