Rob's bowl contains 25 grapes.
Allie's bowl has two more grapes than Rob's bowl, so it has 25 + 2 = 27 grapes.
Allyn's bowl has four more grapes than Allie's bowl, so it has 27 + 4 = 31 grapes.
The total number of grapes in all three bowls combined is 25 + 27 + 31 = 83 grapes.
#### 83
The answer is: 83
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
If Rob's bowl contained 25 grapes, and Allie's bowl had two more grapes than Rob's bowl, and Allyn's bowl had four more grapes than Allie's bowl, what is the total number of grapes in all three bowls combined?

### Answer:
