Explanation: The given scale is: 1 in : 0.4 ft We want to get the equivalent ft for 6 in, therefore all we have to do is cross multiplication as follows: 1 in : 0.4 ft 6 in : ?? equivalent ft = (6*0.4) / (1) = 2.4 ft This means that: 6 in : 2.4 ft is equivalent to the given scale