Last week I ordered 10 cubic yards of mulch, top soil, and compost with an even amount of each material to my gardens. It took me about 30 hours total to use it up, and my main project was a flower bed full of mostly tree & itoh peonies, 2 musa basjoo banana trees, and 3 Asian pear trees.
Here's about half the pile as I've already used up the other half to improve the soil in my new flower bed.