Counting Children with Hobbies of Traveling and Adventuring

Introduction:

The question asks us to find the number of children whose hobby is either traveling or adventuring. Therefore, we need to count the number of children who have either of these hobbies.

Method:

We can use the following method to count the number of children with these hobbies:

1. First, we need to count the number of children who have the hobby of traveling.

2. Next, we need to count the number of children who have the hobby of adventuring.

3. Finally, we need to add the numbers obtained in step 1 and step 2 to get the total number of children with either of these hobbies.

Counting Children with the Hobby of Traveling:

To count the number of children with the hobby of traveling, we need to look at the data provided. From the data, we can see that:

- 200 children have the hobby of traveling
- 100 children have the hobby of both traveling and adventuring

Therefore, the number of children with the hobby of traveling is:

200 - 100 = 100

Counting Children with the Hobby of Adventuring:

To count the number of children with the hobby of adventuring, we need to look at the data provided. From the data, we can see that:

- 150 children have the hobby of adventuring
- 100 children have the hobby of both traveling and adventuring

Therefore, the number of children with the hobby of adventuring is:

150 - 100 = 50

Calculating the Total:

To calculate the total number of children with either of these hobbies, we need to add the numbers obtained in the previous steps. Therefore, the total number of children with either the hobby of traveling or adventuring is:

100 + 50 = 150

However, we need to be careful here. The question specifically asks us to find the number of children whose hobby is either traveling or adventuring. Therefore, we need to subtract the number of children who have both hobbies from the total. From the data, we can see that:

- 100 children have both hobbies

Therefore, the total number of children with either the hobby of traveling or adventuring is:

150 - 100 = 50

Answer:

Therefore, the correct answer is option A - 300 children.