Before yesterday
The merchant adds a sale sign in his shop window to the shown pair of shoes in the morning: "Today by p% cheaper than yesterday. " After a while, however, he decided that the sign saying: "Today 62.5% cheaper than the day before yesterday". Determine the number p.
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- statistics
- geometric average
- algebra
- quadratic equation
- equation
- exponential equation
- expression of a variable from the formula
- arithmetic
- exponentiation
- basic functions
- percentages
- reason
Units of physical quantities:
Grade of the word problem:
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