Each table requires 4 legs, so for 5 tables, Johnny needs 4 * 5 = 20 planks for the legs.
Each table also requires 5 planks for the surface, so for 5 tables, Johnny needs 5 * 5 = 25 planks for the surface.
In total, Johnny needs 20 + 25 = 45 planks of wood.
#### 45
The answer is: 45
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
If Johnny wants to build 5 tables, each requiring a plank of wood for each leg and 5 planks for the surface, how many planks of wood does he need in total?

### Answer:
