Mark has 5 apples. Lily has 4 apples. Tom has twice more apples then Mark and Lily together. How many apples do they have in total?

Amanita, let's solve the problem step by step:

Step 1: Find out how many apples Mark and Lily have together.
We know Mark has 5 apples and Lily has 4 apples. To find the total number of apples they have together, we add their apples:

$\text{Mark's apples} + \text{Lily's apples} = 5 + 4$

Step 2: Find out how many apples Tom has.
The problem says Tom has "twice more apples than Mark and Lily together." This means Tom has 2 times the number of apples that Mark and Lily have together:

$\text{Tom's apples} = 2 \times (\text{Mark's apples} + \text{Lily's apples})$

Step 3: Find the total number of apples they all have.
To find the total, we add the apples of Mark, Lily, and Tom:

$\text{Total apples} = \text{Mark's apples} + \text{Lily's apples} + \text{Tom's apples}$

Now, let's calculate each step.

First, let's add Mark's and Lily's apples.
Second, let's calculate Tom's apples using the result from the first step.
Third, let's add all their apples together for the final answer. Amanita, here is the solution explained step by step:

1. First, we add Mark's and Lily's apples:

So, Mark and Lily together have 9 apples.

2. Next, Tom has twice as many apples as Mark and Lily together:

So, Tom has 18 apples.

3. Finally, to find the total number of apples they all have, we add everyone's apples:

Final Answer:
Mark, Lily, and Tom have 27 apples in total.