3 years ago

Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease.

1 answer:

4 0

Answer:

Because 20 has to be doubled to become 40. While 40 is twice as much as 20 so you just divide 40 by 20 to get 50%.

Explanation:

20 x 20 = 40 = 100%

40 / 20 = 50%

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