If 2n – m = 6, and 2n + m = 10, m = ?

Question

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

flash007 · Answer

Subtract 2nd equation from 1st equation:
 2n+m=10
-2n-(-)m=-6

We get 2m=4,
m=2

Answer B

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TarunKumar1234 · Answer

2n – m = 6, and 2n + m = 10, Solving above, m= 2, n= 4. So, Ans. B.

dushyanta · Answer

IMO (B)

Nipungupta9081 · Answer

IMO B

Adding both Equations We get

4N = 16
N = 4

2n + m = 10 putting value of M in this equation 
2 (4) + M = 10 
M = 2

preetamsaha · Answer

If 2n – m = 6, and 2n + m = 10, m = ?

2n – m = 6 -------(1)
& 2n + m = 10
or, -2n - m = -10 --------(2)
adding (1) & (2),
-2m= -4
or, m= 2

correct answer B

Sagart21 · Answer

Adding both the equations,
4n = 16
n = 4
put n in any equation. 
m = 2
Option B

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