Have questions about your preparation or an upcoming test? Need help modifying the Study Plan to meet your unique needs? No problem. Just book a Skype meeting with Brent to discuss these and any other questions you may have.

- Video Course
- Video Course Overview
- General GMAT Strategies - 7 videos (free)
- Data Sufficiency - 16 videos (free)
- Arithmetic - 38 videos
- Powers and Roots - 36 videos
- Algebra and Equation Solving - 73 videos
- Word Problems - 48 videos
- Geometry - 42 videos
- Integer Properties - 38 videos
- Statistics - 20 videos
- Counting - 27 videos
- Probability - 23 videos
- Analytical Writing Assessment - 5 videos (free)
- Reading Comprehension - 10 videos (free)
- Critical Reasoning - 38 videos
- Sentence Correction - 70 videos
- Integrated Reasoning - 17 videos

- Study Guide
- Blog
- Philosophy
- Office Hours
- Extras
- Prices

## Comment on

Gigacorp Managers## Tricky I would have chosen 60

## Agreed!

Agreed!

## Why dint we do 60/250 ?

## Great question!

Great question!

If you feel the answer is 60/250, then you are answering a different question from the one that is asked.

Among the 250 managers at Gigacorp, 60 are females with MBAs.

so, IF the question were "What percent of ALL MANAGERS are females with MBAs?", then the correct answer would be 60/250

However, the question actually asks "What percent of the FEMALE MANAGERS have MBAs?"

There are 150 FEMALE MANAGERS

Among those 150 FEMALE MANAGERS, 60 have MBAs

60/150 = 40%

Does that help?

Cheers,

Brent

## When setting up the matrix,

## Good question.

Good question.

It makes no difference which sides you use.

Cheers,

Brent

## Hi Brent, once you ascertain

from a saving time perspective.

## You're right. Once we have

You're right. Once we have the information we need, there's no need to complete the rest of the Matrix.

Since this is the first practice question following the Double Matrix lesson, I completed the entire diagram to reinforce the technique.

Cheers, Brent

## vow amazing we call it

Hi Brent facing lot of difficulty with this sum...utterly confusing.

1. can we do it in double matrix

2 can all venn diagram problems be done by double matrix

If 75 percent of the guests at a certain banquet ordered dessert, what percent of the guests ordered coffee?

(1) 60 percent of the guests who ordered dessert also ordered coffee.

(2) 90 percent of the guests who ordered coffee also ordered dessert.

## The "Double Josh in Army

The "Double Josh in Army Lovely method"? Why do you call it that?

To answer your questions...

1. Yes, you can use the Double Matrix Method to solve this question. Here's my full solution: https://gmatclub.com/forum/if-75-percent-of-the-guests-at-a-certain-banq...

2. Any question with two overlapping sets can be solved via the Double Matrix method.

## This question puzzled me a

## Nice Work!

Nice Work!