Answer:
700 units of work done.
Explanation:
Since all the direct materials are added at the beginning, we assume that the 200 beginning inventory was completed 100% in regards to direct materials and as such 600 - 200 = 400 units transferred were completed in respect to direct materials and 300 units in work in progress are also completed as 100% of direct materials.
So total equivalent units in respect to direct materials are 400 + 300 = 700 units of work done.
Hope that helps.