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Subject :IMO    Class : Class 6

If a : b = c : d, then (ma + nc) : (mb + nd) is equal to _____.

A m : n
B na : mb
C a : b
D md : nc


Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 9

Ans 3:

Class : Class 6
i did not understand this

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