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Lattefah84: Senior | Next Rank: 100 Posts; Posts: 93; Joined: Mon Dec 14, 2009 4:15 am

by Lattefah84 » Mon Feb 01, 2010 4:25 am

The length of a rectangular garden surrounded by a walkway is twice its width. If difference between the length and width of just the rectangular garden is 10 meters, what will be the width of the walkway if just the garden has width 6 meters?

(it is not typical question with an official answer, but i stuck here

)

Can someone explain how is it done?

Thanks!

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Everything is possible!!!

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Source: Beat The GMAT — Problem Solving | Mon Feb 01, 2010 4:25 am

ajith: Legendary Member; Posts: 1275; Joined: Thu Sep 21, 2006 11:13 pmFollowed by: 2 members; Location: Arabian Sea; Thanked: 125 times

by ajith » Mon Feb 01, 2010 4:38 am

Lattefah84 wrote:The length of a rectangular garden surrounded by a walkway is twice its width. If difference between the length and width of just the rectangular garden is 10 meters, what will be the width of the walkway if just the garden has width 6 meters?

(it is not typical question with an official answer, but i stuck here )

Can someone explain how is it done?

Thanks!

say a is the length and b is the width

a =2b
a-b = 10

b =10
a=20

now b -2w =6
2w =4
w=2

Always borrow money from a pessimist, he doesn't expect to be paid back.

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sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members; Location: India; Thanked: 267 times; GMAT Score:760

by sanju09 » Mon Feb 01, 2010 5:26 am

Lattefah84 wrote:The length of a rectangular garden surrounded by a walkway is twice its width. If difference between the length and width of just the rectangular garden is 10 meters, what will be the width of the walkway if just the garden has width 6 meters?

(it is not typical question with an official answer, but i stuck here )

Can someone explain how is it done?

Thanks!

If garden is 6 meter broad, then its length is 16 meter. If the walkway has a uniform width of d meter, then

16 + 2 d = 2 (6 + 2 d) or d = [spoiler]2[/spoiler] meter.

The mind is everything. What you think you become. -Lord Buddha

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bluefaith: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Thu Mar 24, 2016 7:44 pm

by bluefaith » Thu Mar 24, 2016 7:51 pm

This is my answer for this question. Quite easy but you need to draw a picture to image.

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