GMAT Question of the Day : Data Sufficiency

rprasadh
#1. October 26th, 2006, at 5:50 AM.

It should be B)

1) This option says the percent increase in number of female emp as 200. But we do not know whether this percentage represents the average % increase or not. What i mean by that is
(60+340)/2 = 200 % or else it could be 60% and 140%. We are not given sufficient info.

2) This option gives no. of female emp. in 1977 as 100 from which we can calculate the % increase from 1987 to 1997 using all the given data in the question.

Shriram
#2. October 26th, 2006, at 5:59 PM.

B

Nrip Nihalani
#3. October 26th, 2006, at 9:03 PM.

is it supposed to be “increased by 60 percent from 1977 to 1987, by what percent” instead of “increased by 60 percent from 1997 to 1987, by what percent”

vietlonewolf
#4. October 27th, 2006, at 12:54 AM.

rprasadh, I wonder how we can do it using only 2nd statement ???
The problem has a typo because it gives you inconsitent data:
Each statement alone can’t give you the correct answer . Taken both statement together:
In 1997 there were 300 female employees at Company C)
(1) From 1977 to 1997 the number of female employees increased by 200 percent at Company C)
–> There were 150 female employees in 1977
However, statement 2 states that “In 1977 there were 100 female employees at Company C)”

Answer is E

himakar
#5. October 27th, 2006, at 9:03 AM.

d

sharanya
#6. October 27th, 2006, at 3:34 PM.

In 1997 there were 300 female employees at Company C) If the number of female
employees at Company C increased by 60 percent from 1977 to 1987, by what percent
did the number of female employees at Company C increase from 1987 to 1997?

if we consider this
then the answer is “D”

magnus1
#7. April 15th, 2007, at 2:09 PM.

Firstly, Nrip has pointed out a “typo” error in the question itself.

Now, we need the number of female employees in the company in the year 1987 in order to be able to answer the question.
Both (1) and (2) give us that number.

Hence, ans is D.

AP
#8. April 15th, 2007, at 2:23 PM.

D

DiD
#9. April 15th, 2007, at 5:22 PM.

D

Chiranjib
#10. April 16th, 2007, at 1:50 PM.

D

thundercats
#11. September 6th, 2007, at 10:42 AM.

(i) 1977————–1987————1997 300
(i—————————————/(200%)
so the 1977 female # = 100 ( 200% = [300-x]/x)
then we can find the # of female employee in 1987 ( 60% increase from 1977 ) thus the % can be found

(ii 1977 female # = 100 we know the # of females in 1987 (60% increase) also the # is given for 1997 - hence the % can be found

Deepak
#12. April 18th, 2008, at 4:09 PM.

The ans for the above q wud be D)EACH statement ALONE is sufficient.

yes.there is a typo in the above q.q can be like below

In 1997 there were 300 female employees at Company C. If the number of female employees at Company C increased by 60 percent from 1997 to 1987, by what percent did the number of female employees at Company C increase from 1987 to 1977?

(1) From 1977 to 1997 the number of female employees increased by 200 percent at Company C.
(2) In 1977 there were 100 female employees at Company C.

With the above q as the reference,we can get the ans as D.

Ambuj
#13. April 18th, 2008, at 5:15 PM.

the correct option would be ” D ”
as both statement clearly give answers alone..

Maulik
#14. April 19th, 2008, at 4:22 PM.

D

NoeL
#15. April 20th, 2008, at 3:26 PM.

D

kv
#16. April 23rd, 2008, at 6:19 PM.

d

Ritula
#17. April 28th, 2008, at 4:16 PM.

Answer should be D.
In data sufficiency problems, we dont have to actually calculate the figures. We just need to check if the statement is sufficient o give the answer or not. In this case, both statements when taken individually help in reaching the answer. so it hsould be D

shivani
#18. May 17th, 2008, at 9:48 AM.

Ans = D

shilpa
#19. August 7th, 2008, at 2:42 AM.

D