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QOTD#13 What is the smallest common multiple of 160 and 240?

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4709
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 90

Kudos [?]: 1605 [0], given: 375

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QOTD#13 What is the smallest common multiple of 160 and 240? [#permalink] New post 14 Nov 2016, 15:14
Expert's post
00:00

Question Stats:

75% (00:21) correct 25% (00:00) wrong based on 4 sessions
What is the smallest common multiple of 160 and 240?


Drill 3
Question: 4
Page: 293


[Reveal] Spoiler: OA
480

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4709
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 90

Kudos [?]: 1605 [0], given: 375

CAT Tests
Re: QOTD#13 What is the smallest common multiple of 160 and 240? [#permalink] New post 14 Nov 2016, 15:20
Expert's post
Explanation

480 Make lists of the multiples for each number. Work on 240 first, then list the multiples of 160 until you find one on the list for 240.




240160
240160
480320
720480


Hence the answer is 480.
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Re: QOTD#13 What is the smallest common multiple of 160 and 240? [#permalink] New post 25 Nov 2016, 17:34
Expert's post
sandy wrote:
What is the least common multiple of 160 and 240?


160 = (2)(2)(2)(2)(2)(5)
240 = (2)(2)(2)(2)(3)(5)

Least common multiple = (2)(2)(2)(2)(5)(3)(2)
= 480

For more on this technique, watch this video...

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Re: QOTD#13 What is the smallest common multiple of 160 and 240?   [#permalink] 25 Nov 2016, 17:34
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QOTD#13 What is the smallest common multiple of 160 and 240?

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