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Martha bought several pencils. If each pencil was either a 23 cent pencil or a 21 pencil, how many 23 cent pencils did martha buy?

(1) Martha bought a total of 6 pencils

(2) The total value of the pencils Martha bought was 130 cents.



Example with explanation to under the concept better
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Correct
Actually he should have mentioned that he works for whole number of days and can’t leave the work in between
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These are the topics in which entire curriculum is divided
So learn the concepts first and then start working on official material
After that u also have to do practice of harder questions which aren’t given in official guide

I Hope list of topics clarifies what content and topics need to be covered 😊
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taruntpr
Helpful explanation. Really helpful !!

This is one of the traps I often fall too. Saving this in my notes to hammer home this concept and for revision later.
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can anyone help me with this, I am getting "C"

This question is discussed here: https://gmatclub.com/forum/brian-works- ... 57093.html Hope it helps.
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taruntpr


Martha bought several pencils. If each pencil was either a 23 cent pencil or a 21 pencil, how many 23 cent pencils did martha buy?

(1) Martha bought a total of 6 pencils

(2) The total value of the pencils Martha bought was 130 cents.



Example with explanation to under the concept better

This question is discussed here: https://gmatclub.com/forum/martha-bough ... 00204.html Hope it helps.
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Correct
Actually he should have mentioned that he works for whole number of days and can’t leave the work in between
I guess that was one of the assumptions taken by the question otherwise they would have mentioned that in the question itself
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Yup
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Hello,

For students looking for free, organized GMAT material, we have a section with 150+ free GMAT modules -- topic-wise videos and practice questions:
https://www.expertsglobal.com/free-gmat-prep/

If you are looking for just videos in an organized manner, here is an exhaustive resource: https://www.expertsglobal.com/free-gmat-prep-videos

All the best!
Experts' Global

PS:
For just alligation prep: https://www.expertsglobal.com/gmat-alligation-for-mixtures-ratios-weighted-average-problems/
For all of percentage, mixture, alligation prep: https://www.expertsglobal.com/gmat-percentages-mixtures-alligation-prep/

WA@vih7130
Hi, I am doing self prep can you suggest a few ways to get the concept covered like the mixture and allegation was entirely new for me.
So if I can first cover the concepts of that particular sub topics, I won't be blank.
What is your take on this?
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