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Subject :IMO    Class : Class 6

If x : y = 4 : 5, then (4x + 5y) : (5x - 2y) is equal ([a-z]+ )

A 41 : 10
B 4 : 5
C 16 : 25
D 3 : 10


([a-z] ) not needed

Ans 1:

Class : Class 9
Can some one please explan this one for me

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