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## Comment on

Introduction to Fractions## M is the sum of the

(A) 1/3 < M < 1/2

(B) 1/5 < M < 1/3

(C) 1/7 < M < 1/5

(D) 1/9 < M < 1/7

(E) 1/12 < M < 1/9

Hi Brent,

Grateful to give me your version of solution to the above mentioned question.

Many thanks

Fatima-Zahra

## Hi Fatima-Zahra,

Hi Fatima-Zahra,

Here's my step-by-step solution: https://www.beatthegmat.com/m-is-the-sum-of-the-reciprocals-of-the-conse...

Cheers,

Brent

## Thank you Brent!

I really do not understand the principle the extreme value!!

Grateful for your help

Fatima-Zahra

## Here are a few more questions

Here are a few more questions involving extreme values and maximization:

- https://gmatclub.com/forum/if-4-x-7-and-6-y-3-which-of-the-following-spe...

- https://gmatclub.com/forum/are-at-least-10-percent-of-the-people-in-coun...

- https://gmatclub.com/forum/1-7-1-8-1-9-is-in-between-239519.html

- https://gmatclub.com/forum/the-minimum-of-the-integers-x-y-and-z-is-10-a...

- https://gmatclub.com/forum/a-certain-meter-records-voltage-between-0-and...

Cheers,

Brent

## Hey, I was trying to solve

The question is:(4th one from reinforcement activity)

If a/b = 1/3, b/c = 2, c/d = 1/2, d/e = 3 and e/f = 1/4, then what is the value of abc/def ?

(A) 27/4

(B) 27/8

(C) 3/4

(D) 3/8

(E) 1/4

## Here's my solution: https:/

Here's my solution: https://gmatclub.com/forum/if-a-b-1-3-b-c-2-c-d-1-2-d-e-3-and-e-f-1-4-th...

I took the approach of plugging in values for a, b, c, d, e, and f that satisfy all of the given conditions (e.g., a/b = 1/3, b/c = 2, etc)

Does that help?

Cheers,

Brent

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