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Manager
Status: GMAT Preperation
Joined: 04 Feb 2010
Posts: 101
Concentration: Social Entrepreneurship, Social Entrepreneurship
GPA: 3
WE: Consulting (Insurance)
Followers: 2

Kudos [?]: 156 [0], given: 15

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17 Sep 2010, 04:00
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Difficulty:

35% (medium)

Question Stats:

71% (02:03) correct 29% (01:38) wrong based on 7 sessions

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A group of tourists needed to walk 45 miles. During the first day the group walked 19 miles. To complete the requires distence during the secound day. the group had to cover the distance which was approximatly what percent greater than the distance walked during the first day?
a)11%
b)16%
c)27%
d)37%
e)58%
[Reveal] Spoiler: OA
Intern
Joined: 18 Jul 2010
Posts: 46
Followers: 0

Kudos [?]: 28 [0], given: 6

Re: % greater than [#permalink]

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17 Sep 2010, 04:04
45 miles
19 miles the first day so 26 miles left

the equation the solve is the following: 26 = 19*(1+x/100)

which lead to x = 700/19 = (approximately) 37 so ANS : D
Manager
Status: GMAT Preperation
Joined: 04 Feb 2010
Posts: 101
Concentration: Social Entrepreneurship, Social Entrepreneurship
GPA: 3
WE: Consulting (Insurance)
Followers: 2

Kudos [?]: 156 [0], given: 15

Re: % greater than [#permalink]

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17 Sep 2010, 04:08
I had the same explaination in the book ? whats the logic for "the equation the solve is the following: 26 = 19*(1+x/100)"?
Intern
Joined: 18 Jul 2010
Posts: 46
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Kudos [?]: 28 [1] , given: 6

Re: % greater than [#permalink]

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17 Sep 2010, 04:15
1
KUDOS
you want to know: 'How much "GREATER" ?"

In other words: what is the percentage of 19 you have to add to 19 to get 26!

Is is clearer?

Be careful, the question is not "By how much percent do you have to multiply 19 to get 26"
If it was the question: you would have the following equation: 19*x/100 = 26.
And, without doing the calculation, I am pretty sure x = 137 !!
Why? Because 19*(137/100) = 19*(100/100 + 37/100) = 19*(1 + 37/100) and 37 is the answer of the previous question !!

Is it better ?
Re: % greater than   [#permalink] 17 Sep 2010, 04:15
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