Question

)If x:y = 8:9 find the ratio ( 7x – 4y): (3x + 2y)
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Answer 1

Answer:

As x:y = 8:9

let z be a common constant

then x=8z and y=9z

now, 7x-4y= 7(8z)-4(9z) = 20z.

3x+2y= 3(8z)+2(9z) =6z

then (7x-4y):(3x+2y) = 20z:6z = 10:3

So, the answer is 10:3.