A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs. 8710, the amount of his monthly savings is :

Answer: Option D

Expense + Saving = Income
      61     +     6     =     67
67 units = Rs. 8710
1 unit = $$\frac{8710}{67}$$  = 130
6 unit = Rs. 780