Question

Rosa jarred 40 liters of jam after 4 days. How many days did Rosa spend making jam if she jarred 50 liters of jam?

Answer 1

Either `4` or `5` days.

Explanation:

Mathematically `40` liters in `4` days could be interpreted as `10` liters per day, which would imply `50` liters would require `5` days.

From a practical point of view, it would take approximately the same amount of time to make `50` liters of jam as it takes to make `40` liters. Consider a similar example that might be more clear: Suppose I can bake a 6" pizza in 45 minutes; if I make a 12" pizza (4 times the volume) I would only end up with burned pizza if I cooked it for `45` minutes `xx 4 = 3` hours!