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# 1518. Water Bottles

Given `numBottles` full water bottles, you can exchange `numExchange` empty water bottles for one full water bottle.

The operation of drinking a full water bottle turns it into an empty bottle.

Return the maximum number of water bottles you can drink.

Example 1:

```Input: numBottles = 9, numExchange = 3
Output: 13
Explanation: You can exchange 3 empty bottles to get 1 full water bottle.
Number of water bottles you can drink: 9 + 3 + 1 = 13.
```

Example 2:

```Input: numBottles = 15, numExchange = 4
Output: 19
Explanation: You can exchange 4 empty bottles to get 1 full water bottle.
Number of water bottles you can drink: 15 + 3 + 1 = 19.
```

Example 3:

```Input: numBottles = 5, numExchange = 5
Output: 6
```

Example 4:

```Input: numBottles = 2, numExchange = 3
Output: 2
```

Constraints:

• `1 <= numBottles <= 100`
• `2 <= numExchange <= 100`

Easy

Normal

Microsoft

### Problem Solution

1518-Water-Bottles