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If which of the following statements must be true
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Updated on: 27 Jan 2019, 02:41
Updated on: 27 Jan 2019, 02:41
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Question Stats:
75% (01:29) correct
25% (00:27) wrong based on 16 sessions
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\(\frac{m+n}{4+5} = \frac{m}{4} + \frac{n}{5}\)
If which of the following statements must be true?
A)m = n
B)5m = 4n
C)5m = –4n
D)25m = 16n
E)25m = –16n
If which of the following statements must be true?
A)m = n
B)5m = 4n
C)5m = –4n
D)25m = 16n
E)25m = –16n
Re: If which of the following statements must be true
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27 Jan 2019, 02:53
27 Jan 2019, 02:53
1
Expert Reply
\(\frac{m+n}{9} = \frac{5m + 4n}{20}\)
Cross multiply
\(20m + 20n = 45m + 36n\)
Rearrange the equation
\(20m - 45 m = 36n - 20n\)
\(-25m = 16n\)
\(25m = -16n\)
E is the answer
Ps: this is basic algebra
Cross multiply
\(20m + 20n = 45m + 36n\)
Rearrange the equation
\(20m - 45 m = 36n - 20n\)
\(-25m = 16n\)
\(25m = -16n\)
E is the answer
Ps: this is basic algebra
gmatclubot
Re: If which of the following statements must be true [#permalink]
27 Jan 2019, 02:53
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