Yes, that's correct! The notation 1 + 4 on the pear drink means that to make the drink, you mix 1 part concentrate with 4 parts water. This gives you a total of 5 parts in the final mixture. Here's a breakdown of how this works:

• If you take 1 cup of concentrate, you would need to add 4 cups of water.
• This results in 5 cups of pear drink.

It's a common way to describe ratios, often used for mixing drinks from concentrate.

Would you like further details or have any questions?

Here are 5 related questions to expand on this concept:

1. How would you calculate the total amount of drink if you had 2 liters of concentrate and followed the same 1 + 4 ratio?
2. If you want to make only 1 liter of pear drink, how much concentrate and water would you need?
3. How can this ratio be represented as a fraction or decimal?
4. How would you adjust the recipe if you wanted a stronger (more concentrated) flavor?
5. What would the final concentration of pear juice be if the 1 + 4 ratio is used?

Tip: To scale up or down the recipe, always keep the ratio of concentrate to water consistent at 1:4.