Final Answer:
That means there would be ? 1.25 as big. The size of each group would be ?0.8 times as many groups
Step-by-step explanation:
When dividing by 2/5 instead of 4/5, it implies multiplying by the reciprocal of 2/5, which is 5/2 or 2.5. Comparing the two scenarios, the result will be 1.25 times as big, calculated by dividing 2.5 (from 2/5) by 2 (from 4/5).
Considering the size of each group, dividing by 2/5 creates larger groups because 2/5 is a larger portion compared to 4/5. Hence, each group would be 0.8 times as many groups, calculated by dividing 4/5 by 2/5, resulting in 0.8.
Understanding how different fractions impact division highlights the importance of knowing the reciprocal relationship between fractions and how they alter the scale and size of the quotient.