Question

If x : y = 5:8, find (4x – 2y) : (7x – 3y).​

Answer 1

Answer:

4 : 11

Step-by-step explanation:

If x : y = 5:8, then x = 5 and y = 8

(4×5-2×8):(7×5-3×8)

(20-16):(35-24)

4 : 11

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Answer 2

Answer:

Step-by-step explanation:

So, we know that x : y = 5 : 8

That is x/y = 5/8

= x/y * y = 5/8 * y

= x = 5/8 y

( 4x - 2y ) : ( 7x - 3y )

= ( 4 x 5/8 y - 2 y ) : ( 7 x 5/8 y - 3 y )

= ( 10 y - 2y ) / ( 35/8 y - 3 y )

= ( 8 y) / ( 9/8 y )

= ( 64/8 ) / ( 9/8 )

= 4 :11