Answer the following questions, rounding as necessary and making your final statements for all. If it is a proportion question, be sure to specify whether it is a direct or indirect proportion prior to computing 1) A propane/butane mix contains 650 mL of propane and 1.4L of butane. a) What is the ratio of volume of propane to volume of butane? b) What is the ratio of volume of propane to total volume? c) What is the ratio of total volume to the volume of butane? 2) A blueprint is drawn in a scale of 1:250. If a steel beam measures 13 in on the blueprint, how long is the actual steel beam? (Express in ft. and inches to nearest 32nd.) 3) A belt connects two gears. The first gear has 32 teeth and spins at 300 rpm, while the second gear only has 8 teeth. How fast does the second gear spin? 4) A steel alloy is made using an iron to carbon ratio of 220:3 by mass. If a batch of the alloy is made using 1500 kg of iron, how much carbon must be used to maintain the proportion? 5) 5 welders are able to complete a particular job in 18 hours. How many welders should be assigned to the task provided it needs to be finished in 6 hours? 6) A contractor estimates that a job will cost her $4560.00 for materials and labour. If her contract price is $5800.00, what is her percentage of profit based on cost? (Round your PERCENTAGE to 2 decimal places) 7) The scale on a blueprint states that 1 cm = 20 ft. Provided a girder measures 48 mm on the blueprint, how long is the actual girder to be? 8) As a welder apprentice, your supervisor offers you a 8% raise. If you were previously earning $20.85 per hour, what is your new rate? (Round your answer as money). 9) It takes one welder 2.5 hours to construct 3 brackets. Compute: a. how long will it take that welder to fabricate 200 brackets? b. how many welders it would take to construct 21 brackets in 3 hours? (Assume all welders work at the same pace.)