the ratio between x and y is 8 / 5 ; x and y are decreased by 5 , what is the ratio between the new values of x and y ?
"ratio = 8 k / 5 k = 8 / 5 , 16 / 10 , etc . x and y are decreased by 5 - - > ( 8 k - 5 ) / ( 5 k - 5 ) new ratio can be 3 / 0 , 11 / 5 , etc . answer : e"
divide(multiply(8, 5), multiply(5, 8))