From the following particulars calculate cash flow from investing activities.

Purchase
Rs.

Sold
Rs.

Investment

2,30,000

1,40,000

Goodwill

1,75,000

Machinery

5,30,000

2,10,000

Patents

75,000

Interest received on debentures held as an investment Rs. 18,000. Dividend received on shares held as investments Rs. 25,000. A part of the building was purchased out of surplus funds for investment purposes, which earned Rs. 75,000 by way of rent.