If x/4=y/5 find the value 15x+2y/20x-2y

We have,    x4 = y54y = 5xy = 5x4Now, 15x + 2y20x - 2y=15x + 2×5x420x - 2 × 5x4=15x + 5x220x - 5x2=35x35x=1

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