Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 23 Aug 2016, 15:08

### 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 June
Open Detailed Calendar

# If Jim earns x dollars per hour, it will take him 4 hours to

Author Message
Intern
Joined: 16 Jul 2008
Posts: 13
Followers: 0

Kudos [?]: 21 [0], given: 0

If Jim earns x dollars per hour, it will take him 4 hours to [#permalink]

### Show Tags

02 Sep 2008, 19:53
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost?

(1) Tom makes 20% less per hour than Jim does.

(2) x + y = $43.75 Current Student Joined: 11 May 2008 Posts: 555 Followers: 8 Kudos [?]: 141 [0], given: 0 Re: Work Problem [#permalink] ### Show Tags 02 Sep 2008, 20:16 given:- cost of jacket is 4x or 5y. stat 1) 4x=5y. insuff. x and y can be anything that satisfies the reqd ratio stat 2) x+y=43.75----> that both together earn 43.75/ hour. and also stem says, 4x=5y. we can solve for x and y. suff B SVP Joined: 07 Nov 2007 Posts: 1820 Location: New York Followers: 30 Kudos [?]: 772 [0], given: 5 Re: Work Problem [#permalink] ### Show Tags 02 Sep 2008, 20:17 djdela wrote: If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost? (1) Tom makes 20% less per hour than Jim does. (2) x + y =$43.75

Jacket cost = 4x=5y

y/x = 4/5= 80/100 (this means Tom makes 20% less perhour than Jim does

(1)
this is duplicate information given in the question stem.
y/x = 4/5=

we have two vaiables and 1 equation.. insuffcient
2) x + y = $43.75 y/x = 4/5 two equations and two unkowns. Solve for X OR Y Jacket cost = 4x or 5y Suffcient B is the answer. _________________ Your attitude determines your altitude Smiling wins more friends than frowning Current Student Joined: 11 May 2008 Posts: 555 Followers: 8 Kudos [?]: 141 [0], given: 0 Re: Work Problem [#permalink] ### Show Tags 02 Sep 2008, 20:20 x2suresh wrote: djdela wrote: If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost? (1) Tom makes 20% less per hour than Jim does. (2) x + y =$43.75

Jacket cost = 4x=5y

y/x = 4/5= 80/100 (this means Tom makes 20% less perhour than Jim does

(1)
this is duplicate information given in the question stem.
y/x = 4/5=

we have two vaiables and 1 equation.. insuffcient
2) x + y = $43.75 y/x = 4/5 two equations and two unkowns. Solve for X OR Y Jacket cost = 4x or 5y Suffcient B is the answer. suresh, sometimes ,GMAT exploits this very thing abt n eqns and n variables and gives us problems wherein conditions and variables may not match, but still we can solve for the variables.. i also was caught off guard. i think that we should not go to the GMAT( other exams are ok) with preconcieved notions abt certain concepts we have learnt till now, as they will hit us using the same weapon.. SVP Joined: 07 Nov 2007 Posts: 1820 Location: New York Followers: 30 Kudos [?]: 772 [0], given: 5 Re: Work Problem [#permalink] ### Show Tags 02 Sep 2008, 20:27 arjtryarjtry wrote: x2suresh wrote: djdela wrote: If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost? (1) Tom makes 20% less per hour than Jim does. (2) x + y =$43.75

Jacket cost = 4x=5y

y/x = 4/5= 80/100 (this means Tom makes 20% less perhour than Jim does

(1)
this is duplicate information given in the question stem.
y/x = 4/5=

we have two vaiables and 1 equation.. insuffcient
2) x + y = \$43.75
y/x = 4/5
two equations and two unkowns.
Solve for X OR Y
Jacket cost = 4x or 5y
Suffcient

suresh, sometimes ,GMAT exploits this very thing abt n eqns and n variables and gives us problems wherein conditions and variables may not match, but still we can solve for the variables..
i also was caught off guard.
i think that we should not go to the GMAT( other exams are ok) with preconcieved notions abt certain concepts we have learnt till now, as they will hit us using the same weapon..

You are right!! it depends what the question is looking for.
we need to be careful..

Some times question is looking e.g (find x-y-z)

and we have only two equations. Still we can find the value of "x-y-z"
2x-4y+2z= 30 -->(1)
x-3y+3z= 20 --(2)

(1)-(2) --> x-y-z=10

Suppose question says find x.
then it is not suffcient.
_________________

Smiling wins more friends than frowning

Re: Work Problem   [#permalink] 02 Sep 2008, 20:27
Display posts from previous: Sort by