Arithmetic Foundation

[FutureM7Student]

Hello, can you help me with the following question:

[Leaderboard]

How to Ask Better GRE Questions on Forums

Welcome to the forums! Since GregMat (who is a very chill person) doesn’t have any specific formatting rules when it comes to asking questions on the forums, I feel like there should at least be a reference text of some sort that can help people ask better questions and make the process more enjoyable for those who try to answer them. The Golden Rule: Imagine You’re Trying To Answer the Question Before you post your question about GRE preparation, practice questions, or strategies, try to put y…

[FutureM7Student]

@How to Ask Better GRE Questions on Forums

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Hi Leaderboard,

I am sorry, I was in a hurry in uploading questions. Let me try again.

I got these questions from gregmat’s foundation quiz (Arithmetic: GRE Quant Foundation Assessment Test (Arithmetic))

For the first screen shot, I was able to narrow the choices down to 3rd and 5th choice.

x + a = b –> x = b + (-a) AND x + a = -b –> x = (-b) + (-a)

But i got stuck after this, and was not able to see correct answer for this one.

For the second screenshot, I was just not able to start solving the problem at all

Thank you!

[Leaderboard]

For the first one, sketch an example on the number line.

For the second one, review the “Repeating Decimal to Fraction” video on PrepSwift.

[waddledee123]

For repeating numbers into fractions I usually do it like this: so for 3.4 repeating, I would do 10x = 34.4repeating. Why? I am trying to isolate the repeating 4 part to subtract it. I need the second part of this puzzle which is 100x = 344.4repeating. Lets put it together: 100x - 10x = 344.4repeating - 34.4 repeating. This gives us 90x = 310. Yay! So now lets get x = 310/90 and simplify into 31/9.