Question

A number is increased by 25 percent and then decreased by 20 percent. The result is what percent of the original number. I know the answer however when I start solving I'm confused. Why do people pick 100 as their starting number? Is it because both 25 and 20 go into it?

Answer 1

When you deal with actual cookies, the processes are quite different, but abstractly they are both 20÷5. Note that ...

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