Because they have the same inclination so if we try to draw them on a diagram they will be parallel to each other.
Samuel surveys 15 students at his school and asks them: “How many candies per day do you usually eat?”
1 answer:
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the original price is "x", or 100%.
but we know that if we reduce "x" by 20%, namely 100% - 20% = 80%, the 80% of "x" is really £50, what is "x" or the 100% anyway?