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# m+n/4+5=

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Founder
Joined: 18 Apr 2015
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m+n/4+5= [#permalink]  18 May 2018, 07:08
Expert's post
00:00

Question Stats:

90% (00:28) correct 10% (00:14) wrong based on 40 sessions
$$\frac{m+n}{4+5}=$$

A. $$\frac{m+n}{4} +\frac{m+n}{5}$$

B. $$\frac{m+n}{9} + \frac{m+n}{9}$$

C. $$\frac{m}{5} + \frac{n}{4}$$

D. $$\frac{m}{4} + \frac{n}{5}$$

E. $$\frac{m}{9} + \frac{n}{9}$$
[Reveal] Spoiler: OA

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VP
Joined: 20 Apr 2016
Posts: 1278
WE: Engineering (Energy and Utilities)
Followers: 19

Kudos [?]: 1212 [1] , given: 241

Re: m+n/4+5= [#permalink]  07 Jul 2018, 09:18
1
KUDOS
Carcass wrote:
$$\frac{m+n}{4+5}=$$

A. $$\frac{m+n}{4} +\frac{m+n}{5}$$

B. $$\frac{m+n}{9} + \frac{m+n}{9}$$

C. $$\frac{m}{5} + \frac{n}{4}$$

D. $$\frac{m}{4} + \frac{n}{5}$$

E. $$\frac{m}{9} + \frac{n}{9}$$

Here,

$$\frac{m+n}{4+5} = \frac{m+n}{9} = \frac{m}{9} + \frac{n}{9}$$
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GRE Instructor
Joined: 10 Apr 2015
Posts: 3290
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Kudos [?]: 3700 [1] , given: 62

Re: m+n/4+5= [#permalink]  11 May 2019, 06:37
1
KUDOS
Expert's post
Carcass wrote:
$$\frac{m+n}{4+5}=$$

A. $$\frac{m+n}{4} +\frac{m+n}{5}$$

B. $$\frac{m+n}{9} + \frac{m+n}{9}$$

C. $$\frac{m}{5} + \frac{n}{4}$$

D. $$\frac{m}{4} + \frac{n}{5}$$

E. $$\frac{m}{9} + \frac{n}{9}$$

Nice (and often-tested) property: $$\frac{a+b}{c}=\frac{a}{c}+\frac{b}{c}$$

So, $$\frac{m+n}{4+5}=\frac{m}{4+5}+\frac{n}{4+5}$$

$$=\frac{m}{9}+\frac{n}{9}$$

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Re: m+n/4+5=   [#permalink] 11 May 2019, 06:37
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