GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 14 Dec 2018, 23:33

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

## Events & Promotions

###### Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
• ### Free GMAT Strategy Webinar

December 15, 2018

December 15, 2018

07:00 AM PST

09:00 AM PST

Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

# There are B number of boys and G number of girls in a class. What is

Author Message
TAGS:

### Hide Tags

DS Forum Moderator
Joined: 21 Aug 2013
Posts: 1412
Location: India
There are B number of boys and G number of girls in a class. What is  [#permalink]

### Show Tags

13 Aug 2018, 21:45
4
00:00

Difficulty:

45% (medium)

Question Stats:

70% (01:23) correct 30% (01:00) wrong based on 56 sessions

### HideShow timer Statistics

There are B number of boys and G number of girls in a class. So total number of students is B+G. What is the value of G?

(1) B is 85% of G.

(2) Value of G is more than 36 but less than 54.
Math Expert
Joined: 02 Aug 2009
Posts: 7106
Re: There are B number of boys and G number of girls in a class. What is  [#permalink]

### Show Tags

14 Aug 2018, 00:16
There are B number of boys and G number of girls in a class. So total number of students is B+G. What is the value of G?

(1) B is 85% of G.
If G is 100, B=85
If G is 200, B=170
Insufficient

(2) Value of G is more than 36 but less than 54.
Can be any value 40,50,etc
Insufficient

Combined
$$B=\frac{85G}{100}$$, in denominator we have 100 but there is ONLY one 5 in numerator..
Therefore for B to be an integer, G should be a multiple of $$\frac{100}{5}=20$$
There is ONLY one multiple of 20 between 36 and 54..
Sufficient

C
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html

GMAT online Tutor

Intern
Joined: 08 Jan 2018
Posts: 17
Location: India
Concentration: Operations, General Management
WE: Project Management (Manufacturing)
There are B number of boys and G number of girls in a class. What is  [#permalink]

### Show Tags

14 Aug 2018, 00:56
From (i)- B=0.85G or B=(17/20)*G ----[Alone not Sufficent]
From(ii)- 36<G<54 ------[Alone not Sufficent]

Combining (i)&(ii)

B=(17/20)*G ; For B to be integer, G= 20/40/60.... multiple of 20

From (ii) permissible value for G=40 [36<G<54]
Therefore, G=40

Ans: Both statement together are sufficent to ans the ques.
There are B number of boys and G number of girls in a class. What is &nbs [#permalink] 14 Aug 2018, 00:56
Display posts from previous: Sort by