Let's imagine one situation that may be real for you. You have a tasty basket with:

• 5 cookies with a cherry jam,
• 5 chocolate cookies,
• 10 chocolate candies,
• 5 chocolate bars,
• 15 biscuits,
• 10 bottles of lemonade.

Calculate the probability that you will randomly pull out an item that includes chocolate, or a cookie.

We can divide our food into influential groups:

1. The first one: cookies (ones with cherry jam and chocolate ones).
2. The second one: is chocolate items (chocolate bars, candies, and chocolate cookies).

Follow the algorithm:

1. Calculate the probability of pulling out a cookie.
2. Calculate the probability of pulling out item that includes chocolate (chocolate sweet).
3. Calculate the probability of pulling out a chocolate cookie.
4. Calculate the resulting probability.