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Alejandro calculated 25 percent of x instead of a 25 percen
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19 Jun 2017, 12:15
19 Jun 2017, 12:15
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Alejandro calculated 25 percent of x instead of a 25 percent increase in x. Which of the following operations could Alejandro perform on his answer to produce the correct solution?
Indicate all such values.
❑ Add x
❑ Multiply by x
❑ Divide by 0.25
❑ Multiply by 5
Re: Alejandro calculated 25 percent of x instead of a 25 percen
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24 Sep 2017, 08:28
24 Sep 2017, 08:28
1
This question is pretty easy if we take a number as an example. For sake of simplicity, let's take 100. Then, 25 percent of 100 is equal to 25, while a 25 percent increase applied to 100 gives 125. Now, we have to check which operations on 25 gives us 125.
Adding x means adding 100 to 25, which gives us 125 -> CORRECT
Multiplying by x means to compute 25*100 = 250 -> WRONG
Dividing by 0.25 means to compute 25/0.25 = 100 -> WRONG
Multiplying by 5 means computing 25*5 = 125 -> CORRECT
The answers are A and D!
Adding x means adding 100 to 25, which gives us 125 -> CORRECT
Multiplying by x means to compute 25*100 = 250 -> WRONG
Dividing by 0.25 means to compute 25/0.25 = 100 -> WRONG
Multiplying by 5 means computing 25*5 = 125 -> CORRECT
The answers are A and D!
Re: Alejandro calculated 25 percent of x instead of a 25 percen
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07 Nov 2021, 07:00
07 Nov 2021, 07:00
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