if 45 % of z is 39 % of y and y is 75 % of x , what percent of x is z ?
"( 45 / 100 ) z = ( 39 / 100 ) y and y = ( 75 / 100 ) x i . e . y = ( 3 / 4 ) x i . e . ( 45 / 100 ) z = ( 39 / 100 ) * ( 3 / 4 ) x i . e . z = ( 39 * 3 ) x / ( 45 * 4 ) i . e . z = ( 0.65 ) x = ( 65 / 100 ) x i . e . z is 65 % of x answer : option d"
multiply(divide(divide(75, const_100), divide(divide(45, const_100), divide(39, const_100))), const_100)