Answer: $100,000 outflow
Explanation: Investing activities refers to those activities in a cash flow statement that are related to purchase or sale of long term assets. The sale of assets results inflow of cash and purchase of assets results in outflow of cash.
In the given case, it can be computed as follows :-
cash flow from investing activities = sale of property - purchase of equipment
= $300,000 - $400,000
= $100,000 outflow