if a : b is 2 : 3 and b : c is 3 : 4 then a : c is equal to
"since a : b = 2 : 3 and b : c = 3 : 4 , we can deduce that a : b : c = 2 : 3 : 4 so , a : c = 2 : 4 = 1 : 2 . d is the correct answer ."
multiply(divide(3, 4), divide(2, 3))