To determine if the individual will have hamburgers left over this year, we need to calculate how many hamburgers will be consumed and compare that to the number of hamburgers they plan to buy.

Given:

• Last year: 30 people, 60 hamburgers, 3 left over.
• This year: 20 people, 40 hamburgers.
• Expected consumption: 2 hamburgers per person.

Step 1: Calculate the expected total consumption this year:

$\text{Total hamburgers consumed} = \text{Number of people} \times \text{Hamburgers per person} = 20 \times 2 = 40$

Step 2: Compare the hamburgers bought with the expected consumption:

• Hamburgers bought = 40
• Expected hamburgers consumed = 40

Since the number of hamburgers bought (40) matches the expected consumption (40), there will be no hamburgers left over.

Answer: No.

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Related Questions

1. How do you calculate the total consumption of food based on the number of guests?
2. If 5 more people were invited, how many hamburgers would be needed?
3. What would happen if each person ate 3 hamburgers instead?
4. How do you calculate the amount of food needed for a party?
5. What if only 35 hamburgers were bought this year?

Tip: Always account for some extra food when planning for a party to avoid shortages.