Please provide explanation and solve this question, I have some difficulty with grasping the concept.

Thanks.

3. In a tom: 93% of the households oWn traditional cars that run on gasoline. l% own electric cara1 and 4% own both traditional and electric cars. IL What is the proportion of honaeholds that own a traditional car or an electric car? b. What is proportion of households that neither own a traditional car nor an electric car