Question

If x : y = 5 : 8, find (4x - 2y) : (7x - 3y)
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Answer 1

Answer:

x:y=5:8

x/y=5/8

x=5y/8

so,

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

=(4.5y/8-2y):(7.5y/8-3y)

=(20y/8-2y):(35y/8-3y)

=(20y-16y)/8:(35y-24y)/8

=4y/8:11y/8

=4y:11y

=4:11