Final answer:
Deb needs to spend 6 days making jam to jar 30 liters of jam.
Step-by-step explanation:
To determine how many days Deb needs to spend making jam in order to jar 30 liters of jam, we can set up a proportion using the given information:
25 liters / 5 days = 30 liters / x days.
Cross-multiplying, we get 25x = 5(30).
Simplifying, we have 25x = 150.
Dividing both sides by 25, we find that x = 6.
Therefore, Deb needs to spend 6 days making jam in order to jar 30 liters of jam in all.