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gmattester: Master | Next Rank: 500 Posts; Posts: 172; Joined: Wed Oct 31, 2007 11:21 am; Thanked: 1 times

by gmattester » Fri Aug 22, 2008 11:21 am

The figure above shows the number of meters in the lengths of the four sides of a jogging path. What is the total distance around the path? [See Attachement]
(1) One of the sides of the path is 120 meters long.
(2) One of the sides of the path is twice as long as each of the two shortest sides.

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Source: Beat The GMAT — Problem Solving | Fri Aug 22, 2008 11:21 am

anju: Master | Next Rank: 500 Posts; Posts: 258; Joined: Thu Mar 29, 2007 3:15 amFollowed by: 1 member; Thanked: 7 times

by anju » Fri Aug 22, 2008 11:35 am

is it 420 mt?

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s_kaks: Senior | Next Rank: 100 Posts; Posts: 49; Joined: Fri Aug 08, 2008 12:56 am; Thanked: 1 times

by s_kaks » Fri Aug 22, 2008 12:24 pm

Yes.. the Ans seems to be 420 m

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gmattester: Master | Next Rank: 500 Posts; Posts: 172; Joined: Wed Oct 31, 2007 11:21 am; Thanked: 1 times

by gmattester » Fri Aug 22, 2008 1:14 pm

I am sorry, this is DS question, not PS.
By mistake I posted here.
BTW which one is sufficient to answer this question

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anju: Master | Next Rank: 500 Posts; Posts: 258; Joined: Thu Mar 29, 2007 3:15 amFollowed by: 1 member; Thanked: 7 times

by anju » Fri Aug 22, 2008 1:21 pm

gmattester wrote:I am sorry, this is DS question, not PS.
By mistake I posted here.
BTW which one is sufficient to answer this question

I guessed so.
B - stmt 2 is sufficient since 2x = x+60; 2x cannot be equal to 3x, the only side remaining is x+60

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parallel_chase: Legendary Member; Posts: 1153; Joined: Wed Jun 20, 2007 6:21 amFollowed by: 2 members; Thanked: 146 times

by parallel_chase » Fri Aug 22, 2008 2:25 pm

I think the answer should be B.

Statement I

120 can be any of the three sides. Therefore Insufficient.

Statement II

one side is twice the other two shorter sides.

3x = 2x
or
x+60 = 2x

3x cannot be equal to 2x for any positive integer. Therefore x+60 =2x

x=60

Sufficient.

Hence B.

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gmattester: Master | Next Rank: 500 Posts; Posts: 172; Joined: Wed Oct 31, 2007 11:21 am; Thanked: 1 times

by gmattester » Fri Aug 22, 2008 2:49 pm

parallel_chase wrote:I think the answer should be B.

Statement I

120 can be any of the three sides. Therefore Insufficient.

Statement II

one side is twice the other two shorter sides.

3x = 2x
or
x+60 = 2x

3x cannot be equal to 2x for any positive integer. Therefore x+60 =2x

x=60

Sufficient.

Hence B.

Great.......
Thanks for explanation.

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