25 liters of a mixture is created by mixing liquid p and liquid q in the ratio 3 : 2 . how many liters of liquid q must be added to make the ratio 5 : 4 ?
"let x be the amount of liquid q to be added . ( 2 / 5 ) * 25 + x = ( 4 / 9 ) * ( 25 + x ) 450 + 45 x = 500 + 20 x 25 x = 50 x = 2 the answer is b ."
subtract(divide(multiply(divide(multiply(add(5, 4), divide(multiply(25, 3), add(3, 2))), 5), 4), add(5, 4)), divide(multiply(25, 2), add(3, 2)))