BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

calculate k

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 1022
Joined: Mon Jul 20, 2009 11:49 pm
Location: Gandhinagar
Thanked: 41 times
Followed by:2 members

calculate k

by shashank.ism » Sat Feb 06, 2010 1:47 pm
If x + r = 1, p + 1 = n, r + n = k, r = 8 and x + p + k = 30, the value of k is


a) 17
b) 22
c) 23
d) 15
e) 11
My Websites:
www.mba.webmaggu.com - India's social Network for MBA Aspirants

www.deal.webmaggu.com -India's online discount, coupon, free stuff informer.

www.dictionary.webmaggu.com - A compact free online dictionary with images.

Nothing is Impossible, even Impossible says I'm possible.
Top
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 1132
Joined: Mon Jul 20, 2009 3:38 am
Location: India
Thanked: 64 times
Followed by:6 members
GMAT Score:760

by harsh.champ » Sat Feb 06, 2010 2:03 pm
shashank.ism wrote:If x + r = 1, p + 1 = n, r + n = k, r = 8 and x + p + k = 30, the value of k is


a) 17
b) 22
c) 23
d) 15
e) 11
Now,r=8
So, x=1 - r = -7
Also, r + n = k => 8 + n = k =>8 + (p + 1 ) = k
So, p = k - 9
Putting value of p and k, x + p + k =30
=>-7 + (k - 9) + k = 30
So, [spoiler]2k = 46 => k = 23 . (C)[/spoiler]

IMO,C.
Last edited by harsh.champ on Sat Feb 06, 2010 2:38 pm, edited 1 time in total.
It takes time and effort to explain, so if my comment helped you please press Thanks button :)



Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.

"Keep Walking" - Johnny Walker :P
Top
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Sat Feb 06, 2010 1:55 pm
Thanked: 5 times

by DeepthiRajan » Sat Feb 06, 2010 2:19 pm
By substituting the values we get k=22 answer is B
Top
User avatar
Legendary Member
Posts: 1132
Joined: Mon Jul 20, 2009 3:38 am
Location: India
Thanked: 64 times
Followed by:6 members
GMAT Score:760

by harsh.champ » Sat Feb 06, 2010 2:44 pm
DeepthiRajan wrote:By substituting the values we get k=22 answer is B
Hey shashank,
Can you please post the OA as I and deepthi are getting contradictory answers.
[spoiler]Mine is coming C while deepthi's B.[/spoiler]
I guess my problem approach is correct.Plz check and correct if needed. :)


Also deepthi , can you check your substitution values? I think you left out on 8 + (p + 1 ) = k
and have got the following p = k - 7.
It takes time and effort to explain, so if my comment helped you please press Thanks button :)



Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.

"Keep Walking" - Johnny Walker :P
Top
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Sat Feb 06, 2010 1:55 pm
Thanked: 5 times

by DeepthiRajan » Sat Feb 06, 2010 5:42 pm
In my haste, I put the answer as 22 instead of 23 (C), I think Harsh your answer is also C ; can't confirm as for some reason, your answer seems to be blacked out.
Top
User avatar
Legendary Member
Posts: 1022
Joined: Mon Jul 20, 2009 11:49 pm
Location: Gandhinagar
Thanked: 41 times
Followed by:2 members

by shashank.ism » Sun Feb 07, 2010 6:47 am
harsh.champ wrote:
DeepthiRajan wrote:By substituting the values we get k=22 answer is B
Hey shashank,
Can you please post the OA as I and deepthi are getting contradictory answers.
[spoiler]Mine is coming C while deepthi's B.[/spoiler]
I guess my problem approach is correct.Plz check and correct if needed. :)


Also deepthi , can you check your substitution values? I think you left out on 8 + (p + 1 ) = k
and have got the following p = k - 7.

According to the source OA is [spoiler](C) i.e. 23[/spoiler] and Deepthi has alaso corrected her answer so there is no confusion right now. Well it seems you were trying to solve faster than harsh .. but harsh is too quick ...and comes up with first answers..

For blackening thing the answers are kept in "spoiler" which blackens the answer. Whenever you mouseover the blackened thing you will get the answer. It's an HTML thing.
My Websites:
www.mba.webmaggu.com - India's social Network for MBA Aspirants

www.deal.webmaggu.com -India's online discount, coupon, free stuff informer.

www.dictionary.webmaggu.com - A compact free online dictionary with images.

Nothing is Impossible, even Impossible says I'm possible.
Top
Post new topic Post Reply
• Page 1 of 1