I dont know porportion method but I can help you this way! If you have 24 pens, thats 2 dozen, and 10 of those pens cost 3 dollars. Well first you would divide 3.00 by 10 because you need to find out how much each pen cost. 3.00/10 is 0.3. So each pen costs 0.3. So now that you know each pen costs 0.3 cents, you can do 0.3 x 24 because of your 2 dozen pens. Which is 7.20. Then it says mow much MORE does it cost for 2 dozen pens. So if 10 pens cost 3.00 and 24 pens cost 7.20, then you subtract 7.20-3.00 and you get 4.20. That should be your answer
The hazard prevention or control method that applies to such a situation is maintenance of the facility where the hazardous materials are kept and regular checking of the equipment's of fire control. This methodology can actually become the lifesaver for all the workers and employees in the workplace.
