what must be added to each term of the ratio 4 : 15 , so that it may become equal to 3 : 4 ?
"let x be added to each term of the ratio 4 : 15 . new ratio becomes ( 4 + x ) / ( 15 + x ) , which is given to be equal to 3 : 4 . this means , ( 4 + x ) / ( 15 + x ) = 3 / 4 solving we get , x = 29 . ans b"
divide(subtract(multiply(3, 15), multiply(4, 4)), subtract(4, 3))