you decide to buy a board game to play. The cost of the game is between $10 and $20, and it is not a whole dollar amount.

Decide the cost of the board game.

The cost of the board game could be $11, $12, $13, $14, $15, $16, $17, $18, or $19.

To decide the cost of the board game, you can follow these steps:

1. Determine the range of possible costs. In this case, the range is between $10 and $20.

2. Since the cost is not a whole dollar amount, we need to consider decimal values. Let's assume it can be any value between $10.01 and $19.99.

3. Now, you need to narrow down the range further. One way to do this is by dividing the range in half. The midpoint of $10.01 and $19.99 is approximately $15.

4. Next, determine if the cost of the board game is higher or lower than $15. To do this, you can use a "higher or lower" strategy. For example, if the cost is higher than $15, you could try a value close to $19.99. If the cost is lower than $15, you could try a value close to $10.01.

5. Repeat this strategy of narrowing down the range by dividing in half and adjusting accordingly until you can pinpoint the exact cost of the board game.

Please note that without more specific information, these steps provide a general strategy for finding the cost, but it may not guarantee an exact answer.

To decide the exact cost of the board game, we need to find a value between $10 and $20 that is not a whole dollar amount.

One way to do this is by narrowing down the range and finding a non-whole dollar amount within that range.

Let's start by dividing the given range in half:

$10 to $20 = ($10 + $20) / 2 = $15

Now we have narrowed down the range to $15. Since we need a non-whole dollar amount, we can add cents to the price.

For example, we can choose $15.50 as the cost of the board game. This value is between $10 and $20 and is not a whole dollar amount.

Remember, there can be multiple correct answers within the given criteria, so you can choose any non-whole dollar amount between $10 and $20.