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Suppose you are trying to learn a list of words. It takes you eight minutes to learn the list the first time you try. You return the next day and study the list again, and find that it takes you only two minutes. How much of a time savings has occurred?A) 25% B) 75% C) 100% D) 125%

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lisandroprieri

Answer:

The correct answer is B) 75%.

Explanation:

First we calculate how many minutes were effectively saved, substracting the last result from the first:

[tex]8_{minutes} - 2_{minutes} = 6_{minutes}[/tex]

Next we want to find out what this number means percentually. We can find out using the simple rule of three, where:

[tex]\\8_{minutes} \rightarrow 100\%\\6_{minutes}\rightarrow x[/tex]

[tex]x=\frac{8_{mins} \times100\%}{6_{mins}}=75\%[/tex]

Therefore:

[tex]6_{minutes}\rightarrow 75\%[/tex]

So we conclude that the correct answer is B) 75%.

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