Question

if (7x-4y):(3x+4y) is 5:13, find the ratio of x and y

Answer 1

Answer:

(7x-4y)*13=(3x+4y)*5

91x-52y=15x+20y

91x-15x=52y+20y

76x=72y

so,

x/y=72/76

=18/19

so,the ratio b/w x and y is 18;19