There are 4 loaves of bread and each loaf has 15 slices, so there are 4 x 15 = 60 slices of bread in total.
There are 10 friends, so they each eat 60 slices / 10 friends = 6 slices of bread.
#### 6
The answer is: 6
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
A loaf of bread was sliced into 15. Ten friends bought 4 loaves of bread. If they all eat all 4 loaves equally, how many slices of bread did each of them eat?

### Answer:
