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# approximate value

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Intern
Joined: 25 Mar 2008
Posts: 43
Followers: 0

Kudos [?]: 4 [0], given: 0

approximate value [#permalink]  05 Nov 2009, 07:34
00:00

Difficulty:

(N/A)

Question Stats:

50% (03:44) correct 50% (03:30) wrong based on 3 sessions
whats the approximate value of 63888/3.31

1) 19300.50
2) 19300.75
3) 19301
4) 19301.25
5) 19301.50

Thanks
VP
Joined: 05 Mar 2008
Posts: 1473
Followers: 11

Kudos [?]: 221 [3] , given: 31

Re: approximate value [#permalink]  05 Nov 2009, 08:02
3
KUDOS
ghentu wrote:
whats the approximate value of 63888/3.31

1) 19300.50
2) 19300.75
3) 19301
4) 19301.25
5) 19301.50

Thanks

Well the the answers start with the same number 1930x in this case the x is 0 or 1

I multiplied 19300 x 3.31 and get 63883 (did this really fast on paper; well..because I can do that fast on paper)

subtract that from 63888 and you get a difference of 5
3.31 definitely goes into 5 so you know there is going to be a +1 = 19301.xx

5 - 3.31 = 1.69

1.69/3.31 = .5xxx

19301.5xxx

Intern
Joined: 25 Mar 2008
Posts: 43
Followers: 0

Kudos [?]: 4 [0], given: 0

Re: approximate value [#permalink]  05 Nov 2009, 09:51
Excellent solution.

Thanks
Manager
Joined: 19 Nov 2007
Posts: 227
Followers: 1

Kudos [?]: 139 [0], given: 1

Re: approximate value [#permalink]  05 Nov 2009, 10:23
As all the answers are very nearer to each other

Multiply 19300 with 3.31 for the last two digits only

The last two digits are 83, but the last two digits of the dividend is 88.

So the difference is 5 means approximately 1.5 of 3.31

Intern
Affiliations: CA - India
Joined: 27 Oct 2009
Posts: 45
Location: India
Schools: ISB - Hyderabad, NSU - Singapore
Followers: 13

Kudos [?]: 514 [0], given: 5

Re: approximate value [#permalink]  05 Nov 2009, 23:51
great work... wonder y i couldn't think of this

Anyways +1 from me to legomez!!
Intern
Joined: 25 Mar 2008
Posts: 43
Followers: 0

Kudos [?]: 4 [0], given: 0

Re: approximate value [#permalink]  06 Nov 2009, 21:47
As all the answers are very nearer to each other
5 means approximately 1.5 of 3.31

that was the masters stroke

Thanks
Senior Manager
Joined: 16 Jul 2009
Posts: 262
Followers: 3

Kudos [?]: 107 [0], given: 3

Re: approximate value [#permalink]  08 Nov 2009, 00:44
Simply dividing with some approximation should help you eliminate the options and reach the answer.. Btw good technique lagomez.
Re: approximate value   [#permalink] 08 Nov 2009, 00:44
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